Crash Course Light

Which region of the electromagnetic spectrum having the highest frequency could penetrate the most materials?

• gamma rays

• microwaves

• radio waves

• ultraviolet rays

Tags

NGSS.MS-PS4-2

What causes the blue color of the sky?

• emission of light by land and water surfaces

• reflection of light from land and water surfaces

• absorption of light by matter in the atmosphere

• scattering of light by matter in the atmosphere

When electromagnetic waves strike a glass, which most likely happens?

• Some waves are absorbed, some waves are reflected, and some pass through the glass.

• Some of the waves are absorbed, none of the waves are reflected,

  and some pass through the glass.

• None of the waves are absorbed, none of the waves are reflected, and none of them pass through the glass.

• None of the waves are absorbed, some of the waves are reflected,

  and none of them pass through the glass.

Tags

NGSS.MS-PS4-2

In 2001, NASA launched a probe to investigate very low-energy radiation emitted when the universe began. What part of the electromagnetic spectrum does this probe observe and record?

• infrared

• microwave

• ultraviolet

• visible

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

What is the effect of absorption of infrared light by human skin?

• sunburn on the skin surface

• disinfection of the skin tissues

• feeling of warmth on the skin

• immediate death of skin cells

Tags

NGSS.MS-PS4-2

Which best explains why light from the sun can warm water in a glass container?

• Light travels very fast.

• Light travels in straight lines.

• Water reflects the light energy.

• Water absorbs the light energy.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

NGSS.MS-PS4-2

A girl looks into a mirror and sees her image. Which word best describes what is occurring?

• absorption

• reflection

• refraction

• scattering

Tags

NGSS.MS-PS4-2

Students want to raise the temperature of water in a glass jar. The jar is on a table in full sunlight. The fastest way to increase the temperature without using a hot plate is to place

• a straw in the water.

• clear plastic wrap around the glass.

• a thermometer in the water.

• black material around the glass.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

How does the color of an object affect the amount of energy it receives from sunlight?

• Light colored objects reflect more light and become warmer than darker objects.

• Light colored objects absorb more light and become warmer than darker objects.

• Dark colored objects reflect more light and become warmer than lighter objects.

• Dark colored objects absorb more light and become warmer than lighter objects.

A class made a solar cooker out of a large can. What color should they paint the can in order to collect the MOST heat?

• black

• green

• pink

• white

Tags

NGSS.MS-PS3-3