Distance Learning Week 10: Light as a Wave

When you listen to the radio, watch TV, or cook food in a microwave, you are using a device that makes use of man-made electromagnetic waves. Which statement about electromagnetic waves is false?

• Electromagnetic waves travel at the speed of light in a vacuum.

• Electromagnetic waves need a medium to travel through.

• Different wavelengths of visible light are interpreted by our eyes as different colors.

• The transfer of energy as electromagnetic waves is called electromagnetic radiation.

Heather puts a straw into a glass of water. She notices that the straw appears to be broken when she looks through the glass and the water from the side. Which term best explains why the straw looks like it is broken?

• reflection

• refraction

• diffraction

• interference

What is a wave?

• a disturbance that transfers energy

• any type of energy that makes particles move

• any type of matter that vibrates back and forth

Which of these statements describes a characteristic of all mechanical waves?

• They are transverse waves.

• They are longitudinal waves.

• They travel through medium.

• They travel through empty space.

Which of these properties allows you to see the moon at night, see yourself in a mirror and hear an echo

• reflection

• refraction

• diffraction

• interference

Which of the following IS NOT a behavior that light waves can undergo when they reach a boundary between two media?

• stopping at the edge of the boundary

• reflection off of the boundary

• transmission into the boundary

• refraction through the boundary

Tags

NGSS.MS-PS4-2

The way that a surface reflects light depends on its texture. Rough surfaces such as cloth and wood tend to scatter light, reflecting it in many different directions. This type of reflection is called:

• diffuse reflection.

• specular reflection.

• incident reflection.

• distorted reflection.

Tags

NGSS.MS-PS4-2

When light rays strike a rough surface, they are:

• scattered.

• focused.

• absorbed.

• refracted.

Tags

NGSS.MS-PS4-2

What do waves carry through objects?

• Sound

• Light

• Energy

• Water

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-1

Wave cycles in a given unit of time is called

• wavelength

• wave speed

• amplitude

• frequency