75+ Best Science Fair Ideas for 7th Grade

Make a photo voltaic oven

Problem: Straightforward / Supplies: Fundamental

This experiment is nice notably should you stay in a sizzling, sunny space. College students create an oven utilizing a cereal field and supplies they’ve round the home. Then, use it to cook dinner a s’extra. 

Be taught extra: Solar Oven Science Experiment

Develop biofilm

Problem: Medium / Supplies: Medium

Biofilm are the micro organism that develop on surfaces. College students can develop biofilm, and clarify how they could develop in a different way on completely different surfaces. They’ll additionally clarify any advantages or drawbacks to having biofilm on surfaces.

Be taught extra: Biofilm Experiment

Plant gentle maze

Problem: Medium / Supplies: Fundamental

College students construct a maze for a plant to develop by way of utilizing a shoebox with obstacles college students construct in and a lightweight supply at one finish. This experiment takes some planning however the result’s spectacular. 

Be taught extra: Plant Light Maze

Make a photo voltaic eclipse viewer

Problem: Straightforward / Supplies: Fundamental

If in case you have a science honest that happens throughout a photo voltaic eclipse occasion, making a photo voltaic eclipse viewer and documenting the expertise of viewing and understanding the eclipse makes a fantastic science undertaking. 

Be taught extra: Make a Solar Eclipse Viewer

Report fowl sightings

Problem: Straightforward / Supplies: Medium

It is a nice technique to construct a love of birding for all times. College students could make and grasp their fowl feeders, then report their information over a month or extra and share it on the honest.

Be taught extra: Cornell Lab Project FeederWatch

Use Oreos to mannequin mitosis

Problem: Medium / Supplies: Medium

A seventh grade science exercise that doubles as a candy deal with? Your college students are going to like this exercise utilizing Oreo cookies and colourful sprinkles to make mobile mitosis fashions.

Be taught extra: Oreo Mitosis

Mannequin meiosis with pipe cleaners

Problem: Medium / Supplies: Medium

Meiosis is much like mitosis, nevertheless it’s particular to the manufacturing of gametes. These hands-on fashions use primary supplies like pipe cleaners and beads to make the method simpler to visualise.

Be taught extra: Meiosis Models

Jelly-bean genetics

Problem: Straightforward / Supplies: Medium

Should you’re studying about how genetic traits are handed alongside from mother or father to baby, do this jelly-bean demo. If you’re completed, you’ll be able to take pleasure in a candy deal with!

Be taught extra: Jelly Bean Genetics

Mannequin the carbon cycle

Problem: Medium / Supplies: Fundamental

Take college students’ data of cycles up a notch by specializing in the carbon cycle. College students create and clarify a mannequin of the carbon cycle. (Bonus: add in some physics and see if college students can add motion to their fashions.)

Measure carbon content material

Problem: Medium / Supplies: Fundamental

On this experiment, college students measure the carbon content material in varied family merchandise.

Create a taxonomy system

Problem: Medium / Supplies: Medium

College students can step into Linnaeus’ footwear by creating their very own system of taxonomy utilizing a handful of various dried beans. It is a enjoyable seventh grade science undertaking to do in teams, so college students can see the variations between every group’s system.

Be taught extra: Taxonomy Project

Watch the greenhouse impact occur

Problem: Straightforward / Supplies: Medium

Climate change is usually a contentious matter, so begin by instructing youngsters in regards to the greenhouse impact, which is straightforward to see and perceive. Then, urge them to discover information collected by different scientists to allow them to study to make knowledgeable selections about matters like international warming.

Be taught extra: Greenhouse Effect

Mannequin cell membranes with bubbles

Problem: Medium / Supplies: Medium

College students find out about cell membranes and train others utilizing bubbles on this demonstration.

Be taught extra: Cell Membrane Bubble Lab

Bake a cell mannequin

Problem: Medium / Supplies: Medium

Certain, college students might construct a cell mannequin out of clay, however cake and sweet are a lot extra scrumptious! Try the hyperlink under to see how one trainer does it.

Be taught extra: Edible Cell Model

Simulate pure choice

Problem: Medium / Supplies: Medium

Journey to the Galápagos Islands and comply with in Darwin’s footsteps as college students discover finch beak variations on this intelligent pure choice lab.

Be taught extra: Natural Selection Lab

Meals chain marble maze

Problem: Medium / Supplies: Medium

Mix a STEM problem with studying about meals webs on this intelligent undertaking. Youngsters will love the hands-on facet, and it’ll actually assist the educational stick.

Be taught extra: Food Web Marble Maze

Water filtration

Problem: Straightforward / Supplies: Fundamental

Present how completely different supplies filter water and the way we are able to clear water utilizing completely different strategies. College students can create filters with one sort of fabric in every, and completely different combos to match how effectively every filters water.

Acid rain and crops

Problem: Straightforward / Supplies: Fundamental

Present how acid rain impacts crops. This experiment supplies an excellent, dramatic end result for college students to showcase.

Create a develop field

Problem: Medium / Supplies: Medium

College students present what they find out about how crops develop and what they want by making a develop field. College students who’re particularly serious about constructing will take pleasure in this undertaking.

Be taught extra: Build a Grow Box

Freeze water instantly

Problem: Straightforward / Supplies: Medium

Discover the idea of nucleation (the method of chain reactions) by turning water into ice in seconds! Make this a seventh grade science honest undertaking by making an attempt the identical course of with different liquids.

Mannequin homeostasis

Problem: Medium / Supplies: Superior

That is such a enjoyable technique to train youngsters in regards to the idea of homeostasis. Get all of the directions you want on the hyperlink.

Be taught extra: Homeostasis Lab

Make teabags fly

Problem: Straightforward / Supplies: Medium

This simple experiment is a cool technique to present youngsters how warmth impacts air molecules, making sizzling air rise. They’ll want some supervision with the fireplace, so do this out on the playground for further security.

Be taught extra: Flying Tea Bag Experiment

Present how salt impacts density

Problem: Straightforward / Supplies: Medium

Discover the salinity of varied our bodies of water, then re-create their waters to see if you may make an egg float or sink. Experiment with different objects too.

Be taught extra: Saltwater Density

Make a density rainbow

Problem: Straightforward / Supplies: Medium

We study early on that oil floats on water, however the place do different liquids slot in? College students discover out once they conduct this colourful density experiment that has them layer completely different substances, making a rainbow.

How supplies impression tooth

Problem: Medium / Supplies: Fundamental

Present how completely different liquids impression our tooth utilizing eggs as a stand-in for our pearly whites. An awesome experiment to speak about sensible implications.

Magic milk

Problem: Straightforward / Supplies: Fundamental

The magic milk experiment, the place college students present how molecules and substances work together, is a superb one to do on the spot. Push the science by having college students clarify what is occurring on the molecular degree and hypothesize how this interplay might occur utilizing different substances. 

Be taught extra: Magic Milk Experiment

Break up water

Problem: Superior / Supplies: Superior

College students use a battery and pencils to point out how water splits into hydrogen and oxygen. They’ll inform which fuel is which by observing the variety of bubbles which are in every stream (hydrogen could have double the bubbles as oxygen). That is one other nice experiment to mannequin on the honest. 

Fizzy driving automobile

Problem: Medium / Supplies: Fundamental

Present how a chemical response (sweet and soda) can energy a automobile. College students can exhibit and be able to reply questions on how this response is robust sufficient to maneuver a whole automobile. 

Be taught extra: Candy & Soda Balloon Experiment

On the pace of melting ice

Problem: Straightforward / Supplies: Fundamental

That is one other experiment that may be completed at residence and reported on in school. College students put ice into completely different bowls and see which situations make it soften quickest. Problem seventh graders by having them create their situations to isolate the dependent variable as a lot as attainable, and to be as particular as attainable of their clarification. 

Elephant toothpaste

Problem: Straightforward / Supplies: Fundamental

Who doesn’t love an exploding experiment? This experiment makes use of a response between hydrogen peroxide and yeast, cleaning soap, and meals coloring to create an enormous multi-colored foam explosion. 

Be taught extra: Elephant Toothpaste Experiment

Invisible ink

Problem: Straightforward / Supplies: Fundamental

College students who need to perceive how chemical compounds react can use primary family supplies to create invisible messages, and train their mates do the identical. Clarify the response and arrange a station for college students to discover write their very own invisible messages. 

Mentos and Coke explosion

Problem: Straightforward / Supplies: Fundamental

That is an experiment that youngsters might have completed at residence, however convey it to the science honest by having them dissect what’s taking place on the molecular degree.

Be taught extra: Mentos and Coke Experiment

Translucent egg experiment

Problem: Straightforward / Supplies: Fundamental

College students clarify acids, bases, and chemical reactions with this demonstration. They’ll need to conduct the experiment at residence and be able to reply questions on honest day.

Be taught extra: Egg and Vinegar Experiment

Polymer bouncy balls

Problem: Straightforward / Supplies: Fundamental

One other science demonstration with a enjoyable end result. College students exhibit how altering the elements that you just use to make a ball modifications its properties.

Make rock sweet

Problem: Medium / Supplies: Fundamental

Present how crystals develop, and the way seed crystals change the speed that rock sweet grows by making completely different batches of rock sweet and seeing which components impression the ultimate end result.

Metallic corrosion

Problem: Medium / Supplies: Medium

On this experiment, college students arrange the situations for various supplies to rust after which acquire information because the supplies, effectively, rust. It’s a great way to follow a managed experiment and information assortment.

Mummified sizzling canine

Problem: Straightforward / Supplies: Fundamental

Use baking soda to mummify a sizzling canine and clarify how chemical reactions can change one thing, like a sizzling canine, dramatically.

Make fluffy slime

Problem: Straightforward / Supplies: Fundamental

What would a science honest be with out slime? Problem college students to make slime with completely different substances to foretell and study the way it seems.

Be taught extra: How To Make Slime

Boiling level of water

Problem: Straightforward / Supplies: Fundamental

College students add various quantities of salt and different soluble supplies to water and see the way it impacts the boiling level. An awesome alternative for information assortment.

Make a lava lamp

Problem: Straightforward / Supplies: Fundamental

College students exhibit a typical chemical response by making a lava lamp. It is a enjoyable possibility for a science honest undertaking as a result of college students can lead individuals by way of the method.

Generate electrical energy

Problem: Medium / Supplies: Medium

On this science honest undertaking, youngsters construct a generator from scratch. Flip it into an experiment by various the supplies to see should you can enhance the quantity of power it produces.

Check balloon elasticity

Problem: Straightforward / Supplies: Medium

Discover whether or not warmth and chilly affect elasticity utilizing balloons. Do this with different supplies too to increase the undertaking.

Be taught extra: Balloon Science

Make a pet auto-feeder

Problem: Superior / Supplies: Superior

Are you able to construct a tool that feeds your pets robotically? Even higher, are you able to make it cheap and simple for others to construct too? This undertaking has actual sensible purposes.

Design a pinball machine

Problem: Medium / Supplies: Medium

Give your class primary provides like rubber bands, plastic cups, and cardboard packing containers. Then problem them to create their very personal pinball machines!

Be taught extra: Pinball STEM Challenge

Exhibit centrifugal pressure

Problem: Medium / Supplies: Medium

This traditional science experiment teaches youngsters about centripetal pressure. Be forewarned: This might doubtlessly make a little bit of a multitude, so take into account the place this science honest undertaking is positioned.

One other technique to exhibit centrifugal pressure

Problem: Straightforward / Supplies: Fundamental

Right here’s one other technique to exhibit centrifugal pressure. College students can arrange the demonstration and let individuals strive it out.

Paper airplane dynamics

Problem: Medium / Supplies: Fundamental

College students can discover aerodynamics by making and testing paper airplanes. Which paper airplane options make the airplane fly the farthest? How does aerodynamics clarify this? 

Be taught extra: Paper Airplane Designs

Potato battery

Problem: Medium / Supplies: Medium

One other technique to make a battery—college students can use what they’ve of their pantry. After they create a potato battery, they work out use it and clarify why it really works.

Paper curler coaster

Problem: Medium / Supplies: Fundamental

Check and exhibit the legal guidelines of physics with a paper curler coaster. It is a nice honest experiment as a result of individuals can be a part of within the enjoyable, sending marbles alongside every curler coaster college students make.

Maglev practice

Problem: Medium / Supplies: Superior

Present how magnets work with a maglev practice. College students use picket blocks with magnets to point out how magnets can entice and repel to create motion or attraction. 

Twister in a bottle

Problem: Straightforward / Supplies: Fundamental

One other traditional science experiment, college students present how tornadoes funnel utilizing 2 liter bottles, water, and a twister connector tube. Add LEGO bricks or small toy animals to point out how a twister impacts objects it comes into contact with. 

Be taught extra: Tornado in a Bottle

Exhibit waves

Problem: Medium / Supplies: Fundamental

College students find out about compression and transverse waves, and present every with a typical slinky. It is a nice undertaking for a pupil who has mastered the center faculty content material and is prepared for extra.

Be taught extra: Teaching Students About Waves

Balloon-powered automobile

Problem: Medium / Supplies: Fundamental

Use a balloon and constructing supplies to create a automobile that exhibits how pressure works. If a couple of pupil selects this as their undertaking, evaluate the end result. Which automobile strikes the quickest and why?

How the energy of a magnet varies by temperature

Problem: Medium / Supplies: Medium

College students take a look at how sturdy magnets are, and what occurs when the magnet modifications both by heating up or cooling down.

Measure the floor rigidity of water

Problem: Medium / Supplies: Fundamental

College students analysis floor rigidity and measure it, then they arrange their station and train others perceive floor rigidity.

Penny battery

Problem: Medium / Supplies: Medium

Make a battery utilizing pennies, aluminum foil, and a water-salt resolution. Seventh graders can clarify what’s taking place to make the battery work and discover a inventive technique to present the facility of their battery.

Make a robotic hand

Problem: Medium / Supplies: Fundamental

College students engineer a robotic hand and may exhibit it on the science honest. So cool!

Gentle change field

Problem: Medium / Supplies: Medium

College students find out about electrical energy whereas making a lightweight change field. Problem them to discover a sensible use for his or her new data about how electrical energy works.

Rubber band helicopter

Problem: Medium / Supplies: Fundamental

Create a helicopter and clarify the way it flies utilizing supplies you may have round the home. College students also can get inventive utilizing different-size rubber bands or testing varied supplies which are heavier or lighter.

Be taught extra: Rubber Band Helicopters

Design an eco-friendly home

Problem: Medium / Supplies: Medium

This undertaking requires analysis into what makes a home eco-friendly, after which creativity to design a home mannequin that will be eco-friendly. College students also can calculate the quantity of carbon their home would save if it have been functioning.

Make a windmill

Problem: Superior / Supplies: Medium

One other eco-friendly thought, have college students make a windmill. If they will get it going and producing power, they’ll actually have one thing to point out off.

Design a weather-proof home

Problem: Medium / Supplies: Medium

College students select a kind of utmost occasion (earthquake, twister, hurricane) and design a home or construction that they assume would maintain that occasion. Then, they take a look at it on a small scale and speak about their outcomes.

Construct a hydraulic carry

Problem: Medium / Supplies: Fundamental

Design a carry utilizing water. Such a cool technique to exhibit engineering and physics.

Be taught extra: Design a Hydraulic Elevator

Make a Rube Goldberg machine

Problem: Superior / Supplies: Fundamental

The concept behind a Rube Goldberg machine is to create a fancy machine to resolve a easy drawback. It is a nice undertaking for college students who need an additional problem.

Make a climate station

Problem: Medium / Supplies: Superior

This undertaking might be as difficult or easy as college students need. They’ll present methods to measure and observe climate utilizing family objects, or they will work out use solar energy to offer power to energy a station. Both method, they’ll have one thing to speak about.

Purchase it: DIY Weather Station at Amazon

Bridge design

Problem: Medium / Supplies: Fundamental

There’s lots college students can do with bridges: design them and analyze the construction and cargo they will take, measure how effectively they do in simulated disasters, and see how a lot help a bridge must span a protracted distance. The probabilities are infinite!

Be taught extra: Try how one student tackled bridges in his science fair project.

Design a catapult

Problem: Straightforward / Supplies: Fundamental

College students study the engineering and physics of catapults, and arrange varied examples for individuals to strive. College students could make catapults as giant or small as they need.

Be taught extra: Catapult Project

Make a pendulum

Problem: Medium / Supplies: Fundamental

College students analysis pendulum and motion, after which create varied demonstrations, like this paint pendulum, to point out individuals how pendulums work.

Make a saltwater battery

Problem: Medium / Supplies: Medium

College students exhibit use salt water to create a battery and transfer voltage from one location to a different.

Check how onerous rocks are

Problem: Straightforward / Supplies: Fundamental

Sure, all rocks are onerous, however some are more durable than others. College students find out about how rocks are categorized, acquire and take a look at rocks in your space, and current what they study.

Be taught extra: Rock Experiment

Present plate tectonics with crackers

Problem: Straightforward / Supplies: Fundamental

College students analysis plate tectonics and use graham crackers and frosting to mannequin them. Scrumptious and academic!

Make the layers of Earth

Problem: Medium / Supplies: Fundamental

College students could also be accustomed to the layers of Earth, however enable college students to dig deeper by determining a technique to current the layers incorporating element and clarification that transcend the crust.

Be taught extra: The Layers of the Earth

Clarify oil spill cleanup

Problem: Straightforward / Supplies: Fundamental

College students analysis how oil might be cleaned up and mannequin it on a small scale. This undertaking combines physics, chemistry, and earth science.

Be taught extra: Oil Spill Cleanup

Volcano eruption

Problem: Straightforward / Supplies: Fundamental

It is a traditional science honest experiment, nevertheless it’s value together with as a result of seventh graders can take the reason and volcano fashions to the following degree with their analysis and clarification.

Be taught extra: Baking Soda Volcano Experiment

Soil erosion experiment

Problem: Medium / Supplies: Fundamental

College students present how soil erodes and talk about the implications for gardening, planners and building, and the earth generally.

Be taught extra: Soil Erosion Experiment