earth !! Flashcards
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What is the revolution period of Mercury?
0.24 years
What is the average temperature of Venus?
500°C
How far is Earth from the Sun?
149.597.809 km
What is the revolution period of Mars?
1.88 years
What is the average temperature of Jupiter?
-140°C
What is the revolution period of Saturn?
29.46 years
What is the average temperature of Uranus?
-214°C
What is the revolution period of Neptune?
167.79 years
How does Earth revolve around the Sun?
In an elliptical shape
How long does it take for Earth to complete one revolution around the Sun?
365.25 days
What causes the different seasons on Earth?
Different distribution of heat and light
What season does the Northern Hemisphere experience in December?
Winter
What season does the Southern Hemisphere experience in March?
Autumn
What season does the Northern Hemisphere experience in June?
Summer
What season does the Southern Hemisphere experience in September?
Spring
What direction does the Earth rotate?
From West to East
How long does it take for Earth to complete one rotation?
24 hours
What is the imaginary line running from the north to the south pole called?
Axis
What shapes the Earth from below the crust?
Internal movement (Crustal movement)
What are the two types of crust?
- Oceanic
- Continental
What is the core of the Earth made of?
Iron and nickel
What is the thickness of the Earth’s mantle?
Almost 3,000 km
Why is life possible on Earth?
- Amount of heat and light from the Sun
- Temperatures are moderate
- Exact amount of oxygen and nitrogen gases
- Large quantities of fresh water
What are examples of physical environments?
- Rivers
- Hills
- Mountains
- Forests
- Temperature
- Moisture in the air
- Wind
- Light
- Soil
What areas discourage human activity due to their extreme features?
- Antarctica
- Greenland
- Siberia
- Sahara Desert
- Amazon Basin
What is an example of a human environment?
Buildings and roads
What encourages human activity in environments?
Strong relationship between people and the environment
What percentage of Earth is covered by water?
70%
What are the largest bodies of water on Earth’s surface called?
Oceans
What are the largest bodies of land on Earth’s surface called?
Continents
What resources can be used to provide water for farmland?
Dams
What allows farmers to harvest 4-6 vegetable crops a year?
Fertile soil with a good supply of water and a mild climate
What is crude oil refined to produce?
- Petrol
- Kerosene
- Pesticides
- Nylon
- Polyester
- Paint
- Plastics
What are the consequences of overuse of resources?
- Deforestation
- Depletion of natural resources
What can uncontrolled waste lead to?
Crisis of species or resources
What are the effects of pollution on natural resources?
- Biodiversity loss
- Greenhouse gas emissions
- Water cycle disruption
- Soil erosion
True or False: The Earth rotates on its axis from East to West.
False
Fill in the blank: The Earth takes _______ hours for a complete rotation.
24