Sun as a Star Review Sheet

Question 1

The main source of energy on Earth is:

Answer 1

The Sun

Question 2

The Sun’s energy comes from:

Answer 2

The fusion of hydrogen into helium

Question 3

The Sun has existed for about five billion years and will continue to shine for about another:

Answer 3

Five billion years

Question 4

Radiation from the Sun:

Answer 4

Warms Earth, causing circulation in the oceans and atmosphere

Question 5

Charges particles coming from the Sun are part of what is called the:

Answer 5

Solar wind

Question 6

Cool, dark areas on the surface of the Sun are known as:

Answer 6

Sunspots

Question 7

Which of the following statements about the solar system is not true?

Answer 7

The planets formed

Question 8

Charged particles from the Sun can strike the upper atmosphere, causing it to glow in a colorful display called the:

Answer 8

Aurorae

Question 9

The Sun is a huge ball of mostly what kind of gas?

Answer 9

Hydrogen

Question 10

The number of sunspots on the Sun changes in relation to the Sun’s magnetic cycle.

Answer 10

True

Question 11

The Sun does not rotate on its axis:

Answer 11

False

Question 12

The surface temperature of the Sun is _____________ degrees Celcius.

Answer 12

5700

Question 13

Region of the Sun where hydrogen fuses to helium

Answer 13

Core

Question 14

Sweeps past the planets

Answer 14

Solar Wind

Question 15

Sometimes show sunspots

Answer 15

Surface

Question 16

The is the hot, outermost layer of the Sun

Answer 16

Corona

Question 17

The Sun is powered by:

Answer 17

Nuclear fusion

Question 18

What is given off as a result of the reactions deep inside the Sun?

Answer 18

Energy

Question 19

Hydrogen nuclei fuse into helium nuclei in what part of the Sun?

Answer 19

The core

Question 20

A ten year-old person produces 10,000 times more energy per kilogram every second that does the Sun.

Answer 20

True

Question 21

Sunspots, aurorae, and solar wind are all tied to the Sun’s ____________ cycle

Answer 21

Magnetic

Question 22

Every high-energy flare that erupts on the Sun will have a negative effect on Earth

Answer 22

11 years

Question 23

The Sun and the solar system were formed from a swirling cloud of ________ and _______.

Answer 23

Dust; Gas

Question 24

The Sun is so hot that hydrogen atoms are ripped apart, creating electrically charged particles known as:

Answer 24

Plasma

Question 25

How is the Sun similar to a bar magnet on Earth?

Answer 25

Both have magnetic fields surrounding them

Question 26

Streams of charged particles coming out of the Sun that can disrupt communications and electrical circuits on Earth are known as:

Answer 26

The solar wind