Earth: Our Home Planet

What are the three main layers of the Earth?

• outer core, inner core, crust

• crust, core, mantle

• crust, mantle, core

• mantle, crust, outer core

How long does it take for the Earth to complete one full rotation on its axis?

• 48 hours

• 36 hours

• 12 hours

• 24 hours

What is the difference between rotation and revolution of the Earth?

• Rotation is the Earth's movement during the day, while revolution is the Earth's movement during the night.

• Rotation is the Earth spinning on its axis, while revolution is the Earth orbiting around the Sun.

• Rotation is the Earth moving in a circular path, while revolution is the Earth moving in a straight line.

• Rotation is the Earth revolving around the Sun, while revolution is the Earth spinning on its axis.

Name the gases that make up the Earth's atmosphere.

• Hydrogen

• Neon

• Nitrogen, Oxygen, Argon, Carbon Dioxide, Other gases

• Helium

What are some of the natural resources found on Earth?

• plastic

• ice

• fire

• water, air, forests, minerals, sunlight

What are the five main climate zones on Earth?

• Equatorial, Arid, Frigid, Subtropical, Tundra

• Tropical, Dry, Temperate, Continental, Polar

Which layer of the Earth is the hottest?

• Atmosphere

• Crust

• Inner core

• Mantle

What causes the Earth's magnetic field?

• Global warming

• Alien interference

• Earth's rotation speed

• Movement of molten iron and nickel in the Earth's outer core

How does the Earth's atmosphere protect us from harmful solar radiation?

• The Earth's atmosphere reflects harmful solar radiation back to the sun

• The Earth's atmosphere has no impact on harmful solar radiation

• The Earth's atmosphere absorbs and scatters harmful solar radiation, particularly through the ozone layer.

• The Earth's atmosphere amplifies harmful solar radiation

What is the greenhouse effect and how does it impact the Earth's climate?

• The greenhouse effect only impacts certain regions of the Earth

• The greenhouse effect is caused by excessive deforestation

• The greenhouse effect is a result of the Earth moving closer to the sun

• The greenhouse effect is a natural process where certain gases in the Earth's atmosphere trap heat from the sun, leading to warming of the planet. Human activities have intensified this effect, causing global warming and climate change.