6.8 Test questions

Question 1

Which planet is known as Earth's twin?

Accepted Answer

Venus

Question 2

What is the largest planet in the solar system?

Accepted Answer

Jupiter

Question 3

Which two seasons have a solstice?

Accepted Answer

Summer and winter

Question 4

Day and night are caused by....

Accepted Answer

the rotation of the Earth on its axis

Question 5

The force that holds the planets in orbit around the sun....

Accepted Answer

gravity

Question 6

What two factors affect the force of gravity between two objects in space?

Accepted Answer

The mass of each object and the distance between the objects

Question 7

What country was the first to launch an artificial satellite?

Accepted Answer

The Soviet Union (Russia)

Question 8

What is the name of the first space station launched by the US.

Accepted Answer

Skylab

Question 9

Earth spinning on its axis is called___

Accepted Answer

rotation

Question 10

Which two scientists believed that the sun was the center of the universe?

Accepted Answer

Galileo and Copernicus

Question 11

Astronomers view objects in space with what kind of scientific instrument?

Accepted Answer

Telescopes

Question 12

Which planet revolves the fastest around the sun

Accepted Answer

Mercury

Question 13

What is the name of the first satellite to orbit Earth?

Accepted Answer

Sputnik 1

Question 14

The moon revolves around the Earth in about ____

Accepted Answer

One month

Question 15

What is primarily made of ice?

Accepted Answer

Comet

Questions 15