Waves/ forces/ friction

What will happen when a pencil is placed in water? 

• Reflect
• Refract
• Absorb
• Transmit

In a rainbow ...

• light is reflected
• light is refracted
• light is absorbed

What forms of energy travel in waves?

• Neither light or sound energy
• both light and sound energy
• sound energy
• light energy

What is the force applied to all objects on Earth?

• Earthquakes
• Gravity
• Wind
• Solar

____ is the rubbing force that acts against motion between two touching surfaces.

• Acceleration
• Normal force
• Momentum
• Friction

Any time the forces are balanced, an object will remain at rest. True or false?

• true
• false

___ is created when friction occurs.

• Cold
• Heat
• Gravity
• Friction

A push and/or a pull.

• force
• net force
• normal force
• drag force

Sound travels slower than light.

• True
• False

A push or pull that causes a change in motion

• Friction
• Gravity
• Force
• Mass