Unit 3: Work and Energy

Learn about the different types of radiation, how they interact with atoms and how they can affect you.

These two “point-counterpoint” videos provide arguments for and against using nuclear energy to generate electricity.

Could we use radio waves to charge electrical technologies in the future?

Can your body be a source of electricity generation? Maybe, if you understand heat transfer. Explore this concept through a 2013 invention by a Canadian teen.

The life and death of stars form the chemical elements that make up Earth, making stars critical to life as we know it.

Litter isn't just a problem on Earth. When litter ends up in space, it can cause collisions and other consequences for satellites, the International Space Station and even for people on Earth!

One of the greatest hazards that humans in space face is cosmic radiation. Learn what cosmic radiation is, why it's dangerous, and ways that we are looking at protecting humans in deep space.

10 images of some spherical objects such as golf balls and tennis balls that are made of different materials and used for specific purposes

How do magnetic fields help you get down safely from the top of a drop tower ride? Learn how electromagnetic induction works at the amusement park.

Learn how moving water can be used to generate electricity. This is called hydroelectric power generation.

Put on your running shoes and sharpen your pencil! Investigate the mathematical connection between work and power in this hands-on activity.

Hydraulics power many of the large machines you see around you.

In this hands on activity build a wheelbarrow from simple materials to explore just how useful simple machines can be!

Try your hand at building a “super coaster” using materials around your home.

Gamma rays might make you think of cancer, harmful radiation or superheroes. But gamma rays have lots of uses: food safety, manufacturing and even medicine!