Unit 4: Energy and Waves

Which of the following transforms electrical energy into light energy?

• Motor
• Generator
• Light bulb
• Batery

A wave in the ocean moves up and down 5 times per second.  What  is the frequency of the wave?

• 5 Hz
• 1/5 Hz
• 25 Hz
• 10 Hz

A wave has a wavelength of 15 m and a frequency of 3 Hz.  What is the wave's speed?

• 3 m/s
• 5 m/s
• 15 m/s
• 45 m/s

If  Andrew pushes the cart down the hall with twice the force for twice the distance, how much more work did he do?

• 2 times the work
• 4 times the work
• The same amount of work
• No work is done

As a pendulum swings back and forth, at what point does it have ALL potential energy?

• When it is swinging
• At the bottom of it's swing
• At the top left or right
• When it is moving the fastest

Tags

NGSS.MS-PS3-2

Why isn't a car 100% efficient?

• Gasoline does not burn well
• Most of the gas evaporates
• Most is transferred to sound energy
• Some energy is lost to heat due to friction

Which of the following is an example of mechanical energy?

• Potential
• Kinetic
• Both of the above
• None of the above

When you shake a slinky up and down, what type of wave do you produce?

• Transverse
• Longitudinal
• Standing
• Electromagnetic

When you compress a slinky and pull it back, what type of wave do you produce?

• Transverse
• Longitudinal
• Standing
• Electromagnetic

What type of energy transfer takes place in a toaster?

• Potential to kinetic
• Kinetic to potential
• Electrical to heat
• Heat to kinetic