Keller - 3rd Earth, Sun, Moon Cycles Flashcards Preview

Flashcards > Keller - 3rd Earth, Sun, Moon Cycles > Flashcards

Flashcards in Keller - 3rd Earth, Sun, Moon Cycles Deck (35):
1

The earth ___________ on its axis and orbit the sun.

rotates

2

An ________ is an imaginary straight line around the Earth rotates.

axis

3

The axis goes from ________ pole to the ________ pole.

North, South

4

The earth's __________ causes day and night.

rotation

5

What is rotation?

The spinning of an object on its axis.

6

It takes the earth ____________ to make one rotation.

one day or 24 hours

7

The earth revolves around the _______.

sun

8

What causes the seasons?

The tilt of the earth on its axis

9

How long does it take the earth to make one revolution around the sun.

365 1/4 days

10

The ________ of the moon are different shapes the moon seems to have in the night sky.

phases

11

The moon repeats phases how often?

Once a month

12

What is the cause of the phases of the moon?

positions of the sun, earth, and moon

13

No matter what phase the moon is in, _____ of it is ALWAYS lit by the sun.

HALF (the half that is facing the sun is always lit)

14

Why does we see lunar phases?

As the moon moves in its orbit, different positions of it appear to be lit up as we look at it from earth.

15

The moon creates ______ and ______ tides on earth.

high and low

16

When the ocean moves away from the land, it is _______ tide.

low

17

When the ocean moves towards the land, it is _______ tide.

high

18

What does a new moon look like?

explain or draw

19

What does a crescent moon look like?

explain or draw

20

What does a quarter moon look like?

explain or draw

21

What does a gibbous moon look like?

explain or draw

22

We don't feel the earth moving but it is never still. It is always moving in ______ way.

two

23

The earth _________ around which is what causes day and night.

rotates (or spins)

24

How long does one rotation of the earth take?

24 hours or one day

25

The sun shines on the earth as it spins but sunlight is only shining on the side of the earth facing the sun - this side is _______.

day

26

The dark side is _______.

night

27

As the earth rotates, we move from ______ to _______ over and over again.

day to night

28

What is it called when the earth travels around the sun?

orbit

29

How long does it take the earth to orbit the sun?

about one year or 365 days

30

As the earth moves around the sun, the ________ change.

seasons

31

What causes the seasons?

the tilt of the earth

32

Different parts of the earth get more or less sunlight at different times of the year. An area gets more sunlight in the __________ and less in the ____________.

summer; winter

33

The poles are ________ straight up and down. The earth is _________.

NOT; tilted

34

If the northern side of the earth is tilted toward the sun, it is _________ there.

summer

35

If the northern side of the earth is tilted way from the sun, it is ________.

winter