Energy

Campfires are sometimes used to cook food. Which type of energy from the campfire cooks the food?

• light

• sound

• thermal

• electrical

When Ava is playing her guitar, it causes vibrations from the guitar strings to travel through the air. What kind of energy from Ava's guitar is causing the vibrations through the air?

• Thermal

• Sound

• Electrical

• Chemical

Which of the following is an example of a device created to produce a sound energy?

• bike

• radio

• battery

• meatball

The bending of light as it passes from one medium to the other is

• refraction

• reflection

• translucent

when you see your face in the mirror that is an example of

• refraction

• reflection

• prism

shiny and smooth surfaces dont reflect much light

• True

• False, the dull surfaces dont reflect much light

A boy rides a skate board down a hill. Eventually the skate board stops. Which is most responsible for causing the skateboard to stop?

• gravity acting on the skateboard

• friction acting on the skateboard

• the mass of the skateboard

• the mass of the boy

A book falls off the desk. What moves the book towards the floor?

• mass

• friction

• gravity

• speed

What will happen to the book if no other forces act upon it?

• book will stay at rest

• book will begin to move

• mass of the book will increase

• gravity on the book will increase

What is a PUSH or PULL of an object?

• Motion
• Force
• Friction
• Gravity