This study set covers Earth Science through 10 practice questions. Explore Earth, the third planet from the sun and the only known place to support life. Learn about its structure, cycles, and history. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 10 questions from the Earth: Our Home Planet study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the approximate distance between Earth and the sun?

A 150 million kilometers
B 50 million kilometers
C 300 million kilometers
D 1 billion kilometers

2 Which of Earth's layers makes up the largest percentage of its volume?

A Crust
B Core
C Mantle
D Atmosphere

3 What is the name of the process where tectonic plates slide beneath each other?

A Rifting
B Faulting
C Subduction
D Erosion

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

A 24 hours
B 30 days
C 365.25 days
D 1 year

5 Which of Earth's spheres is composed of all the water on the planet?

A Lithosphere
B Atmosphere
C Hydrosphere
D Magnetosphere

6 Which gas makes up the largest percentage of Earth's atmosphere?

A Oxygen
B Carbon Dioxide
C Nitrogen
D Hydrogen

7 What are the three main types of rocks in the rock cycle?

A Granite, Basalt, Sandstone
B Igneous, Sedimentary, Metamorphic
C Quartz, Marble, Limestone
D Diamond, Emerald, Ruby

8 What is the name of Earth's only natural satellite?

A Venus
B Moon
C Mars
D Europa

9 In what era did dinosaurs flourish?

A Cenozoic
B Paleozoic
C Mesozoic
D Precambrian

10 What is the name for the pocket of space surrounding Earth where charged particles are controlled by Earth’s magnetic field?

A Atmosphere
B Biosphere
C Magnetosphere
D Lithosphere

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