How old is Earth?

What's biosphere?

• It includes all living things and the outer layers of Earth.

• It has some of the changes are the cooling of rocks, variations in the composition of the air.

• It's a layer of gas almost 10,000 km thick.

Mark the 3 divisions of the biosphere.

• Lithosphere

• Atmosphere

• Hydrosphere

• Thermosphere

• Stratosphere

The ​ (a)   is a layer of gas almost 10,000 km thick that covers the entire surface of Earth.

The ​ (b)   consists of all the water on Earth: oceans, seas, rivers, lakes, groundwater, etc.

The ​ (c)   consists of Earth’s crust and the upper part of the material beneath it, called the mantle.

• atmosphere
• hydrosphere
• lithosphere

Match the divisions of the biosphere.

c

b

a

Lithosphere

Hydrosphere

Atmosphere

Organize these options into the right categories

Groups:

(a) Atmosphere

,

(b) Hydrosphere

,

(c) Lithosphere

• It can be up to 200 km thick, and under the oceans, it is between 50 and 80 km thick.

• It has gases that protect us from extreme cold or heat.

• It consists of all the water on Earth: oceans, seas, rivers, lakes, groundwater, glaciers, etc.

• It has oxygen and carbon dioxide.

• It consists of Earth’s crust and the mantle.

• It is a layer of gas almost 10,000 km thick that covers the entire surface of Earth.

Match the layers of the atmosphere.

a

b

c

d

e

thermosphere

troposphere

stratosphere

mesosphere

exosphere

Weather events happen in the ​ (a)   .

The ​ (b)   contains the ozone layer.

The ​ (c)   has the lowest temperature.

The ​ (d)   contains part of the ionosphere.

The ​ (e)   is made principally of hydrogen and helium.

• troposphere
• stratosphere
• mesosphere
• thermosphere
• exosphere

It is mainly composed of hydrogen and helium.

• Exosphere

• Thermosphere

• Mesosphere

• Stratosphere

• Troposphere

This layer includes part of the ionosphere.

• Exosphere

• Thermosphere

• Mesosphere

• Stratosphere

• Troposphere

This zone has the lowest temperature, reaching almost 100 ºC below zero.

• Exosphere

• Thermosphere

• Mesosphere

• Stratosphere

• Troposphere