Light & Sound, Force, Friction, Waves, & Motion

What is the fastest form of energy?

• heat energy
• sound energy
• light energy
• electrical energy

What will happen when a pencil is placed in water? 

• Reflect
• Refract
• Absorb
• Transmit

Tags

NGSS.MS-PS4-2

If an object makes sound it is because the waves are...

• Stopped
• Vibrating
• Motionless
• Not moving

In a rainbow ...

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

energy produced by vibrations

• light energy
• electrical energy
• thermal energy
• sound energy

What two forms of energy come from the sun?

• light and sound
• light and nuclear
• light and heat
• heat and mechanical

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