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Flashcards in Space Deck (39):
1

Name the planets in order.

Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune

2

What type of star is the sun?

Medium yellow star

3

What pulls the earth to the sun?

Gravity

4

How long does it take the earth revolve around the sun?

365 and 1/4 days

5

How long does it take the earth to rotate one time on it's own axis?

24 hours

6

What angle is earth titled?

23.5 degrees

7

What season is it when the our hemisphere is titled towards the sun?

Summer

8

Do we get direct or indirect sunlight in the winter?

Indirect

9

What is the longest day of the year called? And how long is it?

Summer Solstice and it is 15 hours.

10

What is the shortest day of the year called? And how long is it?

Winter Solstice and it is 9 hours.

11

What is the earth's atmosphere made of?

Mostly nitrogen and oxygen

12

What all does the atmosphere do? (4 things)

Gives us oxygen to breathe
Protects us from falling meteors
Protects us from harmful radiation from the sun
Keeps temperature not too hot or too cold

13

What are the four inner planets?

Mercury
Venus
Earth
Mars

14

What are the characteristics of the inner planets?

They are small and rocky
Very hot and dry (except earth because of the atmosphere)

15

Do inner planets have moons and rings?

Little to no moons and no rings

16

What are the four outer planets?

Jupiter
Saturn
Uranus
Neptune

17

What are the characteristics of the outer planets?

Very large and made of gases

18

Do outer planets have moons and rings?

They have both

19

What are the rings made out of?

Ice and rocks

20

Are the outer planets close together?

No

21

Are the outer planets hot or cold?

Cold

22

What is an asteroid?

Rock smaller than a planet that orbits the sun

23

Where is a huge belt of asteroids?

Between Mars and Jupiter

24

What is a meteor?

Flying rock, piece of dust that crashes towards the earth

25

What is a shooting star?

Meteor that burns up in earth's atmosphere

26

What is meteor that hits earth called?

Meteorite

27

What is a comet?

Huge ball of rock and ice that circle the sun

28

Why do comets have tails?

Because the sun's light reflects of them

29

What is the sun made of?

Burning hot hydrogen and helium

30

How does the sun release light and heat?

It is a nuclear powered explosion factory.

31

Why does the sun look so big?

Closer to earth

32

What are blue stars?

They are the hottest stars.

33

Which stars are the coolest?

Red stars

34

What is called when a star explodes?

A super nova

35

What is it called when a star collapses?

Black hole

36

What is included in our solar system?

Sun and everything that orbits around it (planets, dwarf planets, asteroids, comets, space junk)

37

What is a galaxy?

Whole bunch of stars that orbit around a black hole

38

What is our galaxy called?

The Milky Way

39

What is in the Milky Way?

100 and 400 million stars besides the sun.