Energy

Front

When you rub your hands together the heat is produced by

Back

friction

Front

A lazy student is moving things out of a garage. He wants to move the box that will take the least effort to move. Which box should he move? Options: 7 kg, 6 kg, 3 kg, 2 kg

Back

2 kg

Front

When light is reflected off a smooth surface it will be

Back

a clearer image than on a bumpy surface

Front

Insulators of thermal energy include: styrofoam and plastic, metal and paper, glass and metal, wood and glass.

Back

styrofoam and plastic

Front

When light meets a surface and bounces off, that is called

Back

reflection

Front

When an object is hit with a mallet, the vibration it creates makes

Back

a sound wave

Front

When light meets a convex surface, the image

Back

changes size

Front

Which circuit in the picture is considered a "CLOSED" circuit? Options: left, right

Back

left

Front

Which of the following would not affect a ball being hit in a baseball game? mechanical energy, friction, gravity, magnetism

Back

magnetism

Front

A device that makes electricity by using chemical reactions and storing energy until it is needed is called a(n)

Back

battery