Keller - 3rd Earth, Sun, Moon Cycles Flashcards

1
Q

The earth ___________ on its axis and orbit the sun.

A

rotates

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2
Q

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

A

axis

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3
Q

The axis goes from ________ pole to the ________ pole.

A

North, South

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4
Q

The earth’s __________ causes day and night.

A

rotation

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5
Q

What is rotation?

A

The spinning of an object on its axis.

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6
Q

It takes the earth ____________ to make one rotation.

A

one day or 24 hours

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7
Q

The earth revolves around the _______.

A

sun

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8
Q

What causes the seasons?

A

The tilt of the earth on its axis

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9
Q

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

A

365 1/4 days

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10
Q

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

A

phases

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11
Q

The moon repeats phases how often?

A

Once a month

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12
Q

What is the cause of the phases of the moon?

A

positions of the sun, earth, and moon

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13
Q

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

A

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

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14
Q

Why does we see lunar phases?

A

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

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15
Q

The moon creates ______ and ______ tides on earth.

A

high and low

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16
Q

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

A

low

17
Q

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

A

high

18
Q

What does a new moon look like?

A

explain or draw

19
Q

What does a crescent moon look like?

A

explain or draw

20
Q

What does a quarter moon look like?

A

explain or draw

21
Q

What does a gibbous moon look like?

A

explain or draw

22
Q

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

A

two

23
Q

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

A

rotates (or spins)

24
Q

How long does one rotation of the earth take?

A

24 hours or one day

25
Q

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 _______.

A

day

26
Q

The dark side is _______.

A

night

27
Q

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

A

day to night

28
Q

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

A

orbit

29
Q

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

A

about one year or 365 days

30
Q

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

A

seasons

31
Q

What causes the seasons?

A

the tilt of the earth

32
Q

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 ____________.

A

summer; winter

33
Q

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

A

NOT; tilted

34
Q

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

A

summer

35
Q

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

A

winter