Test Review

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Test Review

• Seasons,
• Moon Phases,
• and Tides

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Rotation and Revolution
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1. What is the Earths rotation axis?

• An imaginary line that runs through the center of
  the Earth from the north pole to the south pole
• It is tilted 23 ½ degrees from the vertical
• The tilt of the Earths axis is always in the
  same direction

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2. What is the difference between Earths
rotation and revolution?

• Revolution Earth revolves counterclockwise
  around the sun in an elliptical orbit (one
  complete revolution takes 365.24 days or 1 year)

• Rotation Earth rotates (spins) counterclockwise
  on its axis causing day and night (24 hours)

Night
Day
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3. What causes day and night?

• Earth rotation around its axis

Night
Day
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4. What causes seasons

• Seasons are caused by earths revolution and its
  tilted axis. As is revolves, part of the earth is
  either tilted towards the sun or tilted away from
  the sun

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5. Label the diagram
More direct sunlight and longer days
Spring
Fall
Summer
Winter
Summer
Winter
Less direct sunlight and shorter days
Fall
Spring
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5. Label the diagram
Earth revolution
Earths Rotation
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Lunar Cycle
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1. What is the role of the Sun in the occurrence
of the lunar cycle?

• The sun illuminates the Moons surface in a
  predictable pattern creating moon phases

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2. How long is one lunar cycle?

• 29.5 days about a month

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3. Know how long it takes from one moon phase to
another

• New moon ? First Quarter 1 week
• 1st Quarter ? Full Moon 1 week
• Full moon ? 3rd Quarter 1 week
• 3rd Quarter ? New Moon 1 week
• 1st Quarter ? 3rd Quarter 2 weeks
• Full Moon ?N New Moon 2weeks
• New moon ? New Moon 4 weeks

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Waxing Crescent
Waning Crescent
3rd Quarter
First Quarter
Full Moon
Waning Gibbous
Waxing Gibbous
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5. What do the terms waxing and waning mean?

• Waxing Growing

• Waning Shrinking

The light on the right is getting bright
The Light on the Left is getting Less
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6. What do the terms gibbous and crescent mean?

• Gibbous More than half

• Crescent less than half

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7. What does the term quarter moon mean?

• Quarter moons are when we can see half of the
  lighted part of the moon. To us it looks like
  half of the moon is lit.

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8. What is a meant by the terms a full moon and a
new moon?

• Full Moon The entire lighted side of the moon
  can be seen

• New Moon Earth can only see the dark side of the
  moon

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Tides
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1. What affect does the gravitational pull of the
moon and the sun have on Earth?

• Gravitational Pull The pull on the earth due to
  the sun, moon, and earths rotation on its axis
  which causes tides

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2. What causes tides to occur on Earth?

• The moon and the sun both have a gravitational
  pull on the earth, which pulls on the waters of
  the earth creating tides

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3. What is a high tide? Low tide?

• High Tide Where the water levels rises twice a
  day
• Low Tide Where the water level falls twice a day
• Both are caused by the gravitational pull from
  the moon and earths rotation

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How many high and low tides are there everyday?

• 2 high tides and 2 low tides daily

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Draw a picture that represents high and low tide.
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4. What is a neap tide? Spring tide?

• Spring Tide When the sun and the moon are both
  in line with the earth, they pull in the same
  direction, causing the greatest difference
  between high and low tides.

• Neap Tide When the moon and the sun are at a 90
  degree angle, they pull in different directions,
  causing the least amount of difference in high
  and low tides

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• True statement There are 2 neap tides and 2
  spring tides every month

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Draw a picture of Neap and Spring Tide
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5. What moon phases go with neap tide? What moon
phases go with spring tide?
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Which has the greatest difference between high
and low tide?

• Spring Tide highest high tide and lowest low
  tide, meaning there is a greater difference
  between high and low tide

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If it was high tide at 6am, predict when the next
low tide be?

• 12 noon (6 hours later)