Earth

Question 1

What is the most dense planet in our solar system?

Answer 1

Earth

Question 2

How much of Earth’s surface is covered in water?

Answer 2

70%

Question 3

Which of the following has the strongest tidal effect on Earth?

Answer 3

The moon

Question 4

What is at the center of the earth?

Answer 4

The heaviest elements

Question 5

Convection in the ___ causes weather on Earth.

Answer 5

troposphere

Question 6

What other planet has about a 24 degree tilt on its axis just like Earth?

Answer 6

Mars

Question 7

What is the average air pressure on the surface of the Earth?

Answer 7

14.7 pounds per square inch

Question 8

Choose the second-most abundant gas in Earth’s atmosphere:

Answer 8

Oxygen

Question 9

What two principal gases make up Earth’s atmosphere?

Answer 9

Oxygen and Nitrogen

Question 10

When did Earth’s secondary atmosphere first appear?

Answer 10

4 billion years ago

Question 11

Besides heating from sunlight, what else contributes to the Earth’s average temperature being higher than one would expect?

Answer 11

Carbon dioxide (and other gases) in the atmosphere cause a greenhouse effect.

Question 12

The Earth’s interior is not uniform. The materials have been separated by density through a process known as _____?

Answer 12

Differentiation

Question 13

What are the layers of Earth in order from the innermost layer to the outermost layer?

Answer 13

Inner core, outer core, mantle, crust

Question 14

What differentiates the surfaces of the Earth and the Moon?

Answer 14

Earth has volcanoes and mountain ranges, whereas the Moon has craters.

Question 15

The center of the earth is about the same temperature as:

Answer 15

The surface temperature of the Sun

Question 16

Where did the heavy elements that make up the bulk of the earth originate?

Answer 16

In a supernova

Question 17

What is the geological process that explains the movement of continental and oceanic plates, which cause earthquakes?

Answer 17

Plate Tectonics

Question 18

How do you measure the density of Earth?

Answer 18

Mass/volume

Question 19

The mass of the earth is made up mostly of which two elements?

Answer 19

Iron and Oxygen

Question 20

What are earthquakes fueled by?

Answer 20

Energy from the Earth’s core

Question 21

How many degrees warmer is Earth with the greenhouse effect?

Answer 21

33 degrees

Question 22

What is the geological process that explains the movement of continental and oceanic plates, which cause earthquakes?

Answer 22

Plate Tectonics

Question 23

What causes the magnetic field found on Earth?

Answer 23

Electric currents created by the flow of molten iron in the outer core