Earth's Spheres (Week 3 Lecture 3)

Question 1

What are the 4 spheres of the earth?

Answer 1

Atmosphere, biosphere, hydrosphere, and lithosphere

Question 2

What are the 4 unique layers of the atmosphere?

Answer 2

Troposphere, stratosphere, mesosphere and thermosphere

Question 3

What is the atmosphere primarily composed of?

Answer 3

Nitrogen and oxygen

Question 4

True or False: The thermosphere is completely cloudless and free of water vapour.

Answer 4

True

Question 5

True or False: In the THERMOSPHERE, temperature gradually decreases with height.

Answer 5

False, temperature gradually increases with height.

Question 6

Aurora borealis and aurora australis are seen in what component of the atmosphere?

Answer 6

Thermosphere (Northern Lights)

Question 7

______ is the region above the stratosphere and below the thermosphere.

Answer 7

Mesosphere

Question 8

True or False: In the MESOSPHERE, temperatures drop with increasing altitude to themesopausethat marks the top of this layer.

Answer 8

True

Question 9

What is the component of the atmosphere where meteors burn up?

Answer 9

Mesosphere

Question 10

______ lies above the troposphere and is separated from it by thetropopause.

Answer 10

Stratosphere

Question 11

What component of the atmosphere contains the ozone layer?

Answer 11

Stratosphere

Question 12

What causes the increase in temperature in the stratosphere?

Answer 12

UV radiation

Question 13

______ is the lowest layer of Earth’s atmosphere, extends from Earth’s surface to an average height of about 12k.

Answer 13

Troposhpere

Question 14

Why does temperature usually decline in the troposphere?

Answer 14

Troposphere is mostly heated through energy transfer from the surface.

Question 15

The ______ contains roughly 80% of themassof Earth’s atmosphere.

Answer 15

Trophosphere

Question 16

`What are the 4 negative impacts human have on the atmosphere?

Answer 16

Aerosols, driving cars, factories and burning tires/garbage

Question 17

What are the 3 positive impacts humans have on the atmosphere.

Answer 17

Hybrid vehicles, alternative power, planting trees

Question 18

The ______ The biosphere is the “life zone” of the Earth, and includes all living organisms (including humans), and all organic matter that has not yet decomposed.

Answer 18

Biosphere

Question 19

The ______ contains all the water found on our planet.

Answer 19

Hydrosphere

Question 20

What percent of water is freshwater and what percent of the freshwater is frozen?

Answer 20

3%, 70%

Question 21

What are the 6 negative impacts that humans impose on the hydrosphere?

Answer 21

Dumping in ocean
Driving Boats 
Oil spills
Building on Shorelines
Overfishing
Building dams

Question 22

What are the 2 positive impacts that humans impose on the hydrosphere?

Answer 22

Sewage treatment plants

Fish sanctuaries

Question 23

The ______ is the solid outer layer of the earth that includes the crust and the uppermost mantle.

Answer 23

Lithosphere

Question 24

The lithosphere is subdivided into______ ______.

Answer 24

Tectonic plates

Question 25

True or False: The uppermost part of the lithosphere that chemically reacts to theatmosphere,hydrosphere, andbiosphere.

Answer 25

True

Question 26

What are the 5 negative impacts humans impose on the lithosphere?

Answer 26

Mining
Littering
Construction
Deforestation
Pesticides

Question 27

What are the 4 positive impacts humans impose on the lithosphere?

Answer 27

Composting
Conservation Areas
Planting Trees
Gardening/Green rooftops