M3: The Spheres Of The Earth

Question 1

Blanket of gas which covers the earth’s surface and its inhabitants from the harshness of space.

Answer 1

The Atmosphere

Question 2

Amount of water vapor present in the air.

Answer 2

Humidity

Question 3

Filters out the harmful ultraviolet radiation emitted by the Sun

Answer 3

Ozone layer

Question 4

Almost all the weather activities occur in this layer

Answer 4

Troposphere

Question 5

Boundary between the stratosphere and the mesosphere

Answer 5

Stratopause

Question 6

This layer of the atmosphere has the coldest region in the atmosphere reaching -100°C

Answer 6

Mesosphere

Question 7

Temperature here can reach up until 2000°C depending on solar activity

Answer 7

Exosphere

Question 8

What is the most abundant gas?

Answer 8

N2 (nitrogen)

Question 9

Water that is on the surface of the planet, underground, and in the air. Approximately 75% of Earth’s total surface.

Answer 9

The Hydrosphere

Question 10

97% of Earth’s total water : covers 70% of Earth’s total surface

Answer 10

Saltwater : Ocean

Question 11

Largest source of fresh water

Answer 11

Snow / Glacier

Question 12

Geothermally-heated groundwater that emerged to the surface. May be acidic or alkaline.

Answer 12

Hot springs

Question 13

Acts as a channel for the water cycle that produces weather changes

Answer 13

Clouds

Question 14

HYDROLOGICAL CYCLE

a. Precipitation
b. Evaporation
c. Transpiration
d. Condensation

What is the right order?

Answer 14

Evaporation - Condensation - Precipitation - Transpiration

Question 15

Originates from wind blowing over the surface of water.

Answer 15

Wave

Question 16

Daily rise and fall of sea level at any given place due to the gravitational pull of the sun and the moon.

Answer 16

Tide

Question 17

Continuous movement of sea water in a particular direction.

Answer 17

Current

Question 18

Northern hemisphere: clockwise direction :: ____________________: counterclockwise direction

Answer 18

Southern Hemisphere

Question 19

Thickest layer of Earth’s interior, approximately 68% of the Earth’s mass

Answer 19

Mantle

Question 20

The only liquid layer of the Earth

Answer 20

Outer core

Question 21

Boundary that separates the crust and the mantle.

Answer 21

Mohorovicic Discontinuity