Seventh Grade Science Projects (475 results)

Science Buddies' seventh grade science projects are the perfect way for seventh grade students to have fun exploring science, technology, engineering, and math (STEM). Our seventh grade projects are written and tested by scientists and are specifically created for use by students in the seventh grade. Students can choose to follow the science experiment as written or put their own spin on the project.

For a personalized list of science projects, seventh graders can use the Science Buddies Topic Selection Wizard. The wizard asks students to respond to a series of simple statements and then uses their answers to recommend age-appropriate projects that fit their interests.

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Science Fair Project Idea
Have you ever had a refreshing bath using a bath bomb? A bath bomb is several ingredients mixed and molded into a shape, which becomes fizzy when it touches the water. It can be quite a relaxing experience, especially if your bath bomb has a nice fragrance or includes some bath salts. The fizz is the result of a chemical reaction taking place between different ingredients within the bath bomb. In this science project, you will get to make your own homemade bath bombs and explore how changing… Read more
Chem_p105
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability A kit for this project is available from our partner . See the Materials section for details.
Cost Low ($20 - $50)
Safety Adult assistance is required for using the oven.
Science Fair Project Idea
Have you ever had a cut or a bloody nose that seemed like it would bleed forever? Though it might have seemed like a long time, it probably did stop pretty quickly. This is because different factors in a person's blood normally work together to plug the opening caused by the cut in a process called blood clotting or coagulation. However, some people have a genetic disorder called hemophilia that causes them to bleed excessively. If a person has hemophilia, he or she is usually missing some of… Read more
HumBio_p037
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- Less Details
Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Specific chemicals (sodium citrate, sodium alginate, and calcium chloride) are needed. A kit containing these chemicals is available from our partner . See the Materials section for details.
Cost Low ($20 - $50)
Safety Adult supervision may be needed for using a blender. All chemicals in this science project are safe to use (they are common food additives).
Science Fair Project Idea
What can you do with magnets and ball bearings that makes a lot of noise? Why, build a magnetic linear accelerator, called a Gauss rifle, of course! Now, this magnetic accelerator is not a weapon, but a way for you to learn a lot more about physics concepts, like momentum. In this physics science project, you will investigate how far a ball bearing launched by a Gauss rifle will fly, depending on how many magnetic acceleration stages are in the setup and the ball bearing's initial velocity.… Read more
Phys_p081
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- Less Details
Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability For your convenience a kit is available for this project from our partner .
Cost Low ($20 - $50)
Safety A Gauss rifle (also called a magnetic linear accelerator) is not a weapon. It can however, launch metal balls at high speeds. Do not aim the device at anyone or anything. Do not put your hand in front of the projectiles. Read and follow closely the important safety notes at the beginning of the Experimental Procedure before you begin.
Science Fair Project Idea
Sometimes engineers get ideas to build robots from animals in nature. There are robot dogs, robot snakes, robot birds, robot cheetahs, and even tiny robotic insects! In this science project, you will build a robot insect of your own. The robot will automatically drive toward a light source, mimicking a behavior called phototaxis, seen in some insects. You will build your own robot and then make adjustments so it can reliably drive toward a light. Read more
Robotics_p012
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- Less Details
Time Required Very Short (≤ 1 day)
Prerequisites none
Material Availability All the electronics parts needed for this project can be found in a kit from our partner .
Cost Average ($40 - $80)
Safety No issues
Science Fair Project Idea
Do you ever wish you could hire someone to guard your favorite toys, or keep certain people from coming into your room? What if you could make a robot to do it for you? This project will show you how to build a simple security robot controlled by a motion-detecting sensor. When someone comes near your valuables or enters the room, the robot will spring to life and (hopefully) scare them away! Read more
Robotics_p024
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- Less Details
Time Required Short (2-5 days)
Prerequisites You will need to know how to use a breadboard to do this project. See the Science Buddies reference [# ProjectGuide Name="Breadboard.Tutorial" Value="HtmlAnchor" #] if you have not used a breadboard before.
Material Availability A kit is available from our partner .
Cost High ($100 - $150)
Safety Short circuits can get very hot and present a burn hazard. Be careful to avoid short circuits when building your robot. See the Procedure for more information.
Science Fair Project Idea
When you think of a motor, you may immediately think of a car, but you actually encounter other motors in your home every day. That's right, if you put on clean clothes from the washing machine, ate food from the fridge, or used a fan, you used an electric motor. In this electronics science project, you will make a simple electric motor with two magnets that "talk" to each other. As they interact, they will alternate between "liking" each other (pulling together), and "disliking" each other… Read more
Elec_p051
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- Less Details
Time Required Very Short (≤ 1 day)
Prerequisites You should be able to coil wire neatly (or find someone who can show you how) in order to make your electric motor work.
Material Availability A kit containing all the specialty items needed for this project is available from our partner .
Cost Low ($20 - $50)
Safety

Never try to use a wall socket as power source for your motor.

Neodymium magnets are very strong. Follow the safety guidelines in the Procedure for working with these magnets.

Science Fair Project Idea
Have you ever wondered how a radio can grab signals that are transmitted through the air and convert them into sound? In this science project, you will build your own AM radio receiver from scratch and use it to listen to AM radio broadcasts. With your crystal radio you will be able to experiment with the circuit and the antenna to get the best reception. Read more
Elec_p014
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- Less Details
Time Required Short (2-5 days)
Prerequisites To do this science project, you must live in an area where you can receive at least one strong AM radio station. You can check for this with a car or portable radio.
Material Availability Specific circuit items are required. A kit from our partner is available for your convenience. See the Materials and Equipment list for details
Cost Average ($40 - $80)
Safety Never operate your crystal radio during a thunderstorm. When not in use, always disconnect your antenna from the radio circuit, and connect it directly to the ground rod. Be sure to wear safety goggles when installing the ground rod, especially if you are using a metal hammer. An adult's help might be necessary for some steps in the Procedure.
Science Fair Project Idea
The enormous task of cleaning up oil spills in oceans and seas has burdened industry, government, and environmentalists for decades. The cleanup is almost always difficult. It involves great amounts of time, resources, and money to remove the oil from the water, and the cleanup is often only partially successful. Today, however, scientists are coming to the rescue, developing a new technique that combines nanotechnology and magnetism. In this science project, you will test the proposed… Read more
EnvEng_p036
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- Less Details
Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability A kit containing the specialty items needed for this science project is available from our partner .
Cost Average ($50 - $100)
Safety Neodymium magnets are very strong. Some have the capacity to interfere or reset pacemakers. Never put a neodymium magnet in your mouth. Always keep them away from computers, credit cards, and other magnetized objects.

Ferrofluids create stains on skin and other materials, so take appropriate measures to keep the fluid contained to the working area.

Science Fair Project Idea
The ingredients in Alka-Seltzer® tablets undergo a chemical reaction that produces carbon dioxide gas as soon as the tablets hit water. Do you think you can cause the tablets to produce gas faster by breaking them into smaller pieces before dropping them in water? Find out for yourself with this project. Read more
Chem_p030
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability A kit for this project is available from our partner . See the Materials section for details.
Cost Low ($20 - $50)
Science Fair Project Idea
Quick, what is your favorite color of M&Ms® candy? Do you want to know what dyes were used to make that color? Check out this science project to find out how you can do some scientific detective work to find out for yourself. Read more
FoodSci_p006
+ More Details
- Less Details
Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability For your convenience a kit is available from our partner .
Cost Low ($20 - $50)
Safety No issues
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