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Flashcards in Solar System Deck (29):
1

What phase of the moon does a lunar eclipse occur on?

A lunar eclipse occurs on a full moon when the Moon passes through earth’s shadow from behind

2

What shadow causes a lunar eclipse?

The Earth’s penumbra or umbra

3

What phases of the moon does the solar eclipse occur on?

A new moon

4

What shadow causes a solar eclipse?

The moons umbra or penumbra

5

Umbra

The darker regions of the shadow

6

Penumbra

The lighter region of the shadow

7

What shape are the orbits of the planets?

The orbit shapes of the planets are ellipses which are ovals or flattened circles

8

What is the most common theory of how the Solar System was formed?

The most common theory that people say happened was the Big Bang theory. They say that a huge bang occurred and all of the planets were formed.

9

Rotation

Spin on its axis

11

Revolution

The movement of one object around another, such as the Earth around the Sun

12

What type of galaxy is our galaxy?

Our galaxy is a spiral galaxy and it’s name is the Milky Way

13

Gravitational pull of the galaxy

The thing that keeps our galaxies together is called gravitational pull of galaxies. This pulls them and keeps one and other together

14

Order of the planets

Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto

15

Position of the moon for each phase

The new Moon is between the Sun and Earth then everything else follows. Also, the full moon is lined up in a straight line with the Sun and Earth

16

Description of Moon phases

New Moon (not illuminated), Waxing Crescent (toenail shaped becoming more illuminated), First Quarter (half lit up and a quarter way gone around its orbit), Waxing Gibbous (almost to a full moon), Full Moon (all illuminated), Waning Gibbous (getting less illuminated, Third Quarter (half lit up left side illuminated), Waning Crescent (back to a new Moon again)

17

Waxing

The moon is gradually becoming more illuminated

18

Waning

The moon is becoming less illuminated

19

Moons rotation

It rotates around the Earth and it takes 29.5 days (more 27.32) days to change from the first to the last phase

20

Moons revolution

The moon rotates around the Earth on its axis and it takes 29.5 days

21

Why do we see the same surface of the moon?

We only see the same surface of the moon because the moon rotates on its axis (rotation) at the exact same rate as its revolution

22

Direct and Indirect Sunlight Seasons

Direct sunlight’s season is called Summer, and Indirect Sunlight’s season is called winter

23

Length of Earth’s rotation

The Earth’s rotation takes 24 hours or 23 hours and 53 minutes to complete

24

Length of Earth’s revolution

The length of Earth’s revolution is 365.26 days

25

Causes of the Seasons

The cause of seasons is earths tilt on its axis. We get indirect and direct sunlight causing seasons.

26

Tilt of Earth on its axis

23.5 degrees

27

Solstices

This is summer solstice and winter solstice which is when they receive direct and indirect sunlight.

28

Equinoxes

Vernal and Autumnal Equinoxes which they receive the same amount of sunlight.

29

Seasons in hemispheres

They are opposites for summer and winter and vernal and autumnal they receive the same amount of sunlight.

30

Study for space vocabulary too

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