earth !! Flashcards

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1
Q

What is the revolution period of Mercury?

A

0.24 years

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2
Q

What is the average temperature of Venus?

A

500°C

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3
Q

How far is Earth from the Sun?

A

149.597.809 km

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4
Q

What is the revolution period of Mars?

A

1.88 years

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5
Q

What is the average temperature of Jupiter?

A

-140°C

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6
Q

What is the revolution period of Saturn?

A

29.46 years

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7
Q

What is the average temperature of Uranus?

A

-214°C

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8
Q

What is the revolution period of Neptune?

A

167.79 years

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9
Q

How does Earth revolve around the Sun?

A

In an elliptical shape

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10
Q

How long does it take for Earth to complete one revolution around the Sun?

A

365.25 days

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11
Q

What causes the different seasons on Earth?

A

Different distribution of heat and light

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12
Q

What season does the Northern Hemisphere experience in December?

A

Winter

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13
Q

What season does the Southern Hemisphere experience in March?

A

Autumn

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14
Q

What season does the Northern Hemisphere experience in June?

A

Summer

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15
Q

What season does the Southern Hemisphere experience in September?

A

Spring

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16
Q

What direction does the Earth rotate?

A

From West to East

17
Q

How long does it take for Earth to complete one rotation?

18
Q

What is the imaginary line running from the north to the south pole called?

19
Q

What shapes the Earth from below the crust?

A

Internal movement (Crustal movement)

20
Q

What are the two types of crust?

A
  • Oceanic
  • Continental
21
Q

What is the core of the Earth made of?

A

Iron and nickel

22
Q

What is the thickness of the Earth’s mantle?

A

Almost 3,000 km

23
Q

Why is life possible on Earth?

A
  • Amount of heat and light from the Sun
  • Temperatures are moderate
  • Exact amount of oxygen and nitrogen gases
  • Large quantities of fresh water
24
Q

What are examples of physical environments?

A
  • Rivers
  • Hills
  • Mountains
  • Forests
  • Temperature
  • Moisture in the air
  • Wind
  • Light
  • Soil
25
Q

What areas discourage human activity due to their extreme features?

A
  • Antarctica
  • Greenland
  • Siberia
  • Sahara Desert
  • Amazon Basin
26
Q

What is an example of a human environment?

A

Buildings and roads

27
Q

What encourages human activity in environments?

A

Strong relationship between people and the environment

28
Q

What percentage of Earth is covered by water?

29
Q

What are the largest bodies of water on Earth’s surface called?

30
Q

What are the largest bodies of land on Earth’s surface called?

A

Continents

31
Q

What resources can be used to provide water for farmland?

32
Q

What allows farmers to harvest 4-6 vegetable crops a year?

A

Fertile soil with a good supply of water and a mild climate

33
Q

What is crude oil refined to produce?

A
  • Petrol
  • Kerosene
  • Pesticides
  • Nylon
  • Polyester
  • Paint
  • Plastics
34
Q

What are the consequences of overuse of resources?

A
  • Deforestation
  • Depletion of natural resources
35
Q

What can uncontrolled waste lead to?

A

Crisis of species or resources

36
Q

What are the effects of pollution on natural resources?

A
  • Biodiversity loss
  • Greenhouse gas emissions
  • Water cycle disruption
  • Soil erosion
37
Q

True or False: The Earth rotates on its axis from East to West.

38
Q

Fill in the blank: The Earth takes _______ hours for a complete rotation.