The Earth - Chapter 1.1 & 1.2

Question 1

____ consists of the sun, eight planets and their moons.

Answer 1

The Solar System

Question 2

What is the name of the regular pattern the planets follow around the sun?

Answer 2

Orbit.

Question 3

The sun produces ___, some giving it to Earth, giving it light and heat.

Answer 3

solar energy

Question 4

Earth is a ___

Answer 4

miracle planet

Question 5

Mountains cover ___ of the Earth’s surface.

Answer 5

one tenth

Question 6

Deserts cover more than ___ of the Earth’s surface.

Answer 6

one eighth

Question 7

Water covers more than ___ of the Earth’s surface.

Answer 7

one third

Question 8

Forests cover almost ___ of the Earth’s surface.

Answer 8

one quarter

Question 9

Earth was formed about ___ years ago.

Answer 9

4.5 billion

Question 10

At first Earth was a sea of ___ material.

Answer 10

molten

Question 11

There are three layers to the Earth. The ___, the ___ and the ___.

Answer 11

crust, mantel and core

Question 12

The crusts is Earth’s ___ and consisted of solid rock. It can be up to ___ thick beneath the continent, but as thin as ___ under the oceans.

Answer 12

outer skin, 60km, 10km

Question 13

Beneath the crust is a small layer of hot, soft rock called the ___. The temperature in the mantle is about ___. As a result, the rock is in a molten or semi-mlten state and is called ___. The crust floats on top of the ___.

Answer 13

mantle, 4000 degrees, magma, magma

Question 14

The ___ is at the centre of the Earth. It is made out of ___ and ___. Its temperature reaches over ___. The heat that the core generates causes the magma to ___ ___

Answer 14

core, nickel and iron, 5000 degrees, move upwards