Unit 2 Science Test - 6th Grade

In which layer would most of the sun's harmful UV rays be absorbed?

• mesosphere

• stratosphere

• thermosphere

• troposphere

What is the name of the main chemical that destroys the molecule found in the stratosphere/ozone that can no longer absorb UV radiation?

• CFC

• VOC

• methane

• carbon dioxide

Tags

NGSS.MS-PS1-3

Which analogy will help your classmates understand how the increase in greenhouse gases will play a role in the greenhouse effect and global warming?

• the increase in greenhouse gas emissions is like wearing a sweatshirt while you are running

• the increase in the greenhouse gas emissions is like putting on extra layers of clothes during the winter

• the increases in greenhouse gas emissions is like placing an extra log on fire to produce more heat

• the increase in greenhouse gas emissions is like pulling an extra blanket over you while lying on the couch

Tags

NGSS.MS-ESS3-5

What are the 2 most abundant gases in Earth's atmosphere?

• oxygen

• methane

• nitrogen

• carbon dioxide

Which gas makes up 78% of Earth's atmosphere?

• nitrogen

• oxygen

• methane

• carbon dioxide

Which gas makes up 20% of Earth atmosphere?

• oxygen

• nitrogen

• methane

• greenhouse gases

What makes up 2% of Earth's atmosphere?

• nitrogen

• oxygen

• trace compounds (water, carbon dioxide)

• greenhouse gases

What happens to temperature as altitude increases in the thermosphere?

• it increases

• it decreases

• it remains constant

• they both decrease

What gas in the atmosphere forms into clouds?

• water vapor

• oxygen

• nitrogen

• hydrogen

Tags

NGSS.MS-ESS2-4

Meteors burn up here.

Special lightning called sprites.

Noctilucent clouds form over north and south poles.

• exosphere

• ionosphere

• mesosphere

• thermosphere