Fourth Grade Aerodynamics & Hydrodynamics Science Projects (15 results)

You've seen for yourself, or in videos, planes flying, rockets hurdling towards space, boats racing through the water and submarines exploring the depths of the ocean. Have you ever stopped and thought about the aerodynamics and hydrodynamics involved in their operation? There is a lot of interesting science that goes into how they work! Check out these science and engineering projects to explore movement through air and water.

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Science Buddies Original
Science Fair Project Idea
Have you ever seen a tall sailboat and wondered how they don't flip over when it's windy? Try this project and learn about the physics behind how sailboats stay upright. Read more
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- Less Details
Time Required Very Short (≤ 1 day)
Tinkering
Prerequisites None.
Material Availability Readily available.
Cost Very Low (under $20)
Safety Be careful when poking nails into the cork.
Science Buddies Original
Science Fair Project Idea
Naval fighter pilots seem to defy physics each time they fly their jets off of an aircraft carrier. Normal runways are thousands of feet long so that airplanes can develop enough lift to fly. But a runway on an aircraft is much shorter. How can naval pilots get their fighter jets into the air without falling off the carrier into the ocean? Well, because they get a boost from a catapult! Sounds unbelievable? It's not, and you can find out more about catapult-assisted takeoff in this… Read more
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- Less Details
Time Required Average (6-10 days)
Tinkering
Prerequisites None.
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Buddies Original
Science Fair Project Idea
Ok, well you will not be making real monkeys fly, so what is this science project all about? You might think that flying, screaming monkeys and science project do not belong in the same sentence, but you will be working with toy monkeys, and toys can sometimes be great tools for exploring science. In this science project, you will launch flying, screaming toy monkeys and determine how far they fly with the stretch of a rubber band. The distance they will go can be graphed to see how… Read more
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- Less Details
Time Required Average (6-10 days)
Tinkering
Prerequisites A large open space to launch the monkey is required.
Material Availability You will need to purchase the Flying Screaming Monkey toy. See the Materials and Equipment list for details.
Cost Low ($20 - $50)
Safety No issues
Science Buddies Original
Science Fair Project Idea
Who'd have thought that drinking milk can lead to a pretty cool boat? Boat design is an important and active area of engineering. In this science fair project, which was inspired by a PBS DragonflyTV episode, you will design and build different kinds of model boats out of milk cartons. Examples of the types of designs you might test include a raft, a catamaran, and a V-shaped hull. Once the model boats are built, you will test key features, such as stability, maneuverability, and their… Read more
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- Less Details
Time Required Short (2-5 days)
Tinkering
Prerequisites For this science project, you will need access to a shallow beach or pool where the boats can be safely tested.
Material Availability Readily available
Cost Low ($20 - $50)
Safety Adult supervision is required when the boats are tested in the water. Wear life jackets if you plan to get into the water. Don't go too far away from shore.
Science Buddies Original
Science Fair Project Idea
Have you ever looked up into the sky and seen not a bird, not a plane, but a hot-air balloon? They are definitely amazing and fun to watch! Do you think they are all the same size? Does size affect how long the hot-air balloon can fly? In this science fair project, you will launch hot-air balloons, powered by a toaster, and see how the size of the balloon affects its flight. Read more
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- Less Details
Time Required Short (2-5 days)
Tinkering
Prerequisites You will need access to a room with a high ceiling, like a gym or an auditorium. Or you can perform the experiment outdoors, if there is no wind.
Material Availability Readily available.
Cost Low ($20 - $50)
Safety Adult supervision is required. Use caution with the hot toaster. A hot toaster is a potential fire hazard.
Science Buddies Original
Science Fair Project Idea
Where do you get your best ideas? At school with your friends? When you are out for a bike ride? Over 2,200 years ago, a scientist named Archimedes got one of his best ideas when he sat down in his bath. Eureka! He went running through the streets without even bothering with his clothes. What was he so excited about? He had discovered that when objects, like his body, are placed in water, water is pushed out of the way. Have you noticed that, too? The weight of the water that is pushed out… Read more
+ More Details
- Less Details
Time Required Very Short (≤ 1 day)
Tinkering
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety Adult supervision is required when using the hammer.
Science Buddies Original
Science Fair Project Idea
Do you dream about making deep, undersea voyages? Let this project take you 20,000 leagues under the sea! Investigate how submarines dive and surface by changing their buoyancy in this fun project. Read more
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- Less Details
Time Required Very Short (≤ 1 day)
Tinkering
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety Have an adult help you when using the razor blade or knife, as well as the drill. Always wear safety goggles when working with power tools. If you are performing the experiment in a pool, be sure to have an adult with you at all times.
Science Buddies Original
Science Fair Project Idea
Have you ever seen butterflies fluttering around outside, gliding through the air and landing on flowers? While they are delicate and fragile, butterflies are actually excellent flyers. They are so good, in fact, that scientists at Harvard University studied butterfly wing shapes as an inspiration for building a miniature flying robot. In this science project, you will do your own version of the Harvard scientists' experiment to measure the flight performance of butterfly wings. Read more
+ More Details
- Less Details
Time Required Short (2-5 days)
Tinkering
Prerequisites None
Material Availability Readily available
Cost Average ($40 - $80)
Safety No issues
Science Buddies Original
Science Fair Project Idea
What keeps a submarine from spinning out of control? In this science project, you can investigate how submarines use stabilizing fins to move forward. You might even figure out the secrets to maneuvering a submarine! Read more
+ More Details
- Less Details
Time Required Short (2-5 days)
Tinkering
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety Have an adult help you when using the razor blade or knife, as well as the drill. Always wear safety goggles when working with power tools. If you are performing the experiment in a pool, be sure to have an adult with you at all times.
Science Buddies Original
Science Fair Project Idea
Drones—also called quadcopters or unmanned aerial vehicles (UAVs)—are an increasingly popular toy for hobbyists. Some companies even want to use them for business purposes, like delivering packages right to your doorstep! However, drones typically have a rather short battery life. Does the added weight of a package affect a drone's battery life? Try this project to find out! Read more
+ More Details
- Less Details
Time Required Average (6-10 days)
Tinkering
Prerequisites None
Material Availability This project requires a drone. See the Materials list for details.
Cost Average ($50 - $100)
Safety There are important safety guidelines you must follow when operating a drone. See the Procedure for details.
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