Earth structure and atmosphere

The layer where weather occurs is the _____

• troposphere

• stratosphere

• mesosphere

• thermosphere

Answer explanation

The troposphere is the lowest layer of Earth's atmosphere, where all weather phenomena occur, including clouds, rain, and storms. This makes it the correct answer for the layer where weather occurs.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

The outermost layer of the atmosphere is the _____

• exosphere

• troposphere

• stratosphere

• mesosphere

Answer explanation

The outermost layer of the atmosphere is the exosphere, which extends from the thermosphere and gradually fades into outer space. It is characterized by very low density and is where satellites orbit the Earth.

The frozen parts of Earth's water are known as _____

• glaciers

• rivers

• lakes

• oceans

Answer explanation

The frozen parts of Earth's water are primarily found in glaciers, which are large masses of ice formed from compacted snow. Rivers, lakes, and oceans contain liquid water, not frozen forms.

All living organisms make up the _____

• biosphere

• lithosphere

• atmosphere

• hydrosphere

Answer explanation

All living organisms, including plants, animals, and microorganisms, collectively form the biosphere. The biosphere encompasses all ecosystems on Earth, making it the correct choice for this question.

The _____ includes all the water on Earth, such as lakes and oceans.

• hydrosphere

• atmosphere

• lithosphere

• biosphere

Answer explanation

The hydrosphere encompasses all the water on Earth, including oceans, lakes, and rivers. The atmosphere refers to air, the lithosphere to land, and the biosphere to living organisms, making hydrosphere the correct choice.

Tags

NGSS.MS-ESS2-4

The protective gas layer in the stratosphere is called _____

• ozone

• carbon dioxide

• nitrogen

• argon

Answer explanation

The protective gas layer in the stratosphere is called ozone. It absorbs harmful ultraviolet radiation from the sun, protecting living organisms on Earth.

The _____ effect traps heat in the Earth's atmosphere.

• greenhouse

• volcano

• tidal

• magnetic

Answer explanation

The greenhouse effect is the process by which certain gases in the Earth's atmosphere trap heat, preventing it from escaping into space. This effect is crucial for maintaining the planet's temperature and supporting life.

Tags

NGSS.MS-ESS3-5

The layer with auroras and high temperatures is the _____.

• thermosphere

• troposphere

• stratosphere

• mesosphere

Answer explanation

The thermosphere is the layer of the Earth's atmosphere where auroras occur and temperatures can rise significantly, making it the correct answer.

Tags

NGSS.MS-ESS2-6

The gas primarily responsible for the greenhouse effect is _____

• carbon dioxide

• oxygen

• nitrogen

• argon

Answer explanation

The greenhouse effect is primarily caused by gases that trap heat in the atmosphere. Carbon dioxide is the most significant of these gases, contributing to global warming, while oxygen, nitrogen, and argon do not have this effect.

Tags

NGSS.MS-ESS3-5

The Earth's protective layer that surrounds the planet is called the _____.

• atmosphere

• crust

• core

• mantle

Answer explanation

The Earth's protective layer that surrounds the planet is called the atmosphere. It plays a crucial role in shielding the Earth from harmful solar radiation and maintaining the climate necessary for life.