Sixth Grade Science Experiments (Page 112)

Science Fair Project Idea

Scientific Method

If you compare products made primarily for boys with products made primarily girls, you will probably notice differences in colors for the two groups. Why do you think this is? Is it the marketplace responding to gender-based color preferences? Do you think it's the other way around, and the products create gender-based color preferences? Design a survey study to find out if gender actually make a difference in color preferences. Here are some questions you might want to consider when… Read more

Does It Sink or Float? Depends on the Soap!

STEM Activity

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If you’ve ever had to wash dishes, you know that the right dish soap can make a dirty job a lot easier. Have you ever wondered how dish soap is able to clean dishes so much more effectively than water alone? Like many household cleaners, dish soap is a surfactant – it helps break up leftover food on plates by making it easier for food particles to dissolve in water. The dish soap also breaks up the water molecules themselves, which leads to some pretty interesting kitchen science… Read more

Does Weight Affect a Drone's Battery Life?

Science Fair Project Idea

Scientific Method

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

Does Your Mobile Phone Radiate? Measuring Cell Phone Electromagnetic Radiation

Science Fair Project Idea

Scientific Method

Every day, no matter where you are, you will see people using their cell phones. People use their cell phones for more than just making calls though. They use them for texting and searching the Internet, too. But some health groups are concerned that using your cell phone too much can be hazardous to your health as it exposes your body to electromagnetic radiation. In this electricity and electronics science project, you will investigate how much radiation your cell phone emits when used… Read more

Dog Scents: The Super Nose of Man's Best Friend

Science Fair Project Idea

Scientific Method

Everyone thinks their dog's the best, but in the case of smelling ability, all dogs possess super powers. In fact, a dog's nose can be over a 1,000 times more sensitive than a human's! In this project, learn about smell from a dog's unique perspective. There will be a whole lot of sniffing going on when you set up these fun experiments to find out what scents your dog and other canine friends find most interesting or appealing. Read more

Dog Toys: What Makes One a Favorite or a Flop to Fido?

Science Fair Project Idea

Scientific Method

Got a pampered pooch in your household? Then you know how much most dogs love their toys. And not just any toy. It has to be that particular beat up ball, gnawed frisbee, or ratty not-so-plush-anymore bunny with only one eye and partial ear remaining. Seems that dogs, like people, have definite preferences for their play things. This fun project investigates what makes a toy interesting to a dog. In these experiments, you and your dog can have some fun while you learn about canine behavior… Read more

Domino Theory

Science Fair Project Idea

Scientific Method

Have you ever set up a line of dominoes and watched them fall? If you wanted to make your line of dominoes fall faster, do you think you should set the dominoes up with more or less space between them? Set your dominoes up in a straight line, using a ruler to keep the spacing between them constant. Try different spacings at 0.5cm increments. Conduct multiple trials at each spacing, and time how long it takes for a fixed total length of dominoes to fall (e.g., a 1.5 or 3.0 meter length of… Read more

Drag Racing in the Water

Science Fair Project Idea

Scientific Method

It's fun to go swimming! To feel the power of your body as you launch yourself into the water. But did you know that swimming isn't just about skill and athleticism? The human body consists of skin, contours, and curves. How the water moves along your body and the clothing you are wearing determines how fast you can go. In this science fair project, you will investigate the effects of a force called drag. You will compare the time it takes to swim 25 meters in a swimsuit versus swimming the… Read more

Dried Foods: The Science Behind Making Lightweight Snacks

Science Fair Project Idea

Scientific Method

If you've ever been on a long hike, you probably already know how hungry all that walking can make you. But if you're going a long distance, the last thing you want is a heavy pack of snacks on your back. So what can you bring along for a healthy, hunger-satisfying, lightweight snack? How about dried foods, like banana chips or beef jerky? Many foods have high water content. The drying process removes much of the water from the food, leaving behind a lighter, but equally nutritious snack. Just… Read more

Drive a Race Car with Machine Learning

Science Fair Project Idea

Engineering Design Process

How do you design a program that can pilot a self-driving race car? By using machine learning. In this project, you will train your own machine learning model for an autonomous vehicle, the AWS (Amazon Web Services) DeepRacer. You can run your car's machine learning model on a simulated racetrack (Figure 1), or you can purchase a 1/18 scale model vehicle that can race on a physical track (Figure 2 - note: new cars are no longer for sale, but you may be able to purchase a used one on a site like… Read more

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