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Science > Eclipses, Tides, etc. > Flashcards

Eclipses, Tides, etc. Flashcards

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1
Q

What are the three types of eclipses?

A

Solar, Annular, and lunar

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2
Q

How does a solar eclipse happen?

A

When the moon comes in between the Earth and the Sun.

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3
Q

What is the darkest part of the moon’s shadow called?

A

The Umbra

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4
Q

Where must you be to see a total solar eclipse?

A

In the Umbra

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5
Q

How long does a solar eclipse last?

A

A few minutes

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6
Q

What is the outer atmosphere of the sun called?

A

The corona

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7
Q

What is the lighter shadow called

A

The penumbra

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8
Q

Where must you be to see a partial eclipse?

A

In the penumbra

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9
Q

Which part of the eclipse is experienced more: A partial or total eclipse. Why?

A

A partial one, since the penumbra is larger than the umbra.

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10
Q

What happens in an annular eclipse?

A

The dark disc of the moon is surrounded by a ring of sunlight.

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11
Q

What does annulus mean?

A

“ring” in latin

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12
Q

What is the outer edge of the sun seen as during an annular eclipse?

A

Total eclipse/ring

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13
Q

What is a lunar eclipse?

A

When the Earth comes in between the Moon and the Sun .

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14
Q

What happens to the moon during a Lunar eclipse.

A

The Moon is in Earth’s shadow

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15
Q

How does a total lunar eclipse occur?

A

The full moon is in Earth’s umbra

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16
Q

Which part of the Earth sees a lunar eclipse?

A

The night side

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17
Q

How does the moon appear different colors during a lunar eclipse?

A

The dust as well as the clouds in the atmosphere

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18
Q

How does a partial lunar eclipse occur?

A

Part of the moon is within Earth’s umbra.

19
Q

How does a penumbral lunar eclipse occur?

A

The moon goes through the shadow of the Earth that is lighter.

20
Q

Why aren’t eclipses seen simultaneously all over the world?

A

Since the moon is only about 1/4 the size of the Earth. Therefore, the shadow being cast from it won’t cover the whole Earth; Just a part of it. During a lunar eclipse, only the night side of the Earth can see the Earth’s shadow on the moon.

21
Q

What half of the moon is always lit up by the sun?

A

The side that is facing the moon.

22
Q

How many lunar phases are there and what are they called? (know where they are and how to describe them)

A

8 lunar phases; New moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third/last quarter, and waning crescent.

23
Q

Why does the moon experience phases?

A

Depending on the position of the Sun, Earth, and Moon, determines how much sunlight reflects off of the moon.

24
Q

True or false: The same side of the moon is always seen from Earth.

A

True

25
Q

How long does it take for the moon to orbit the Earth?

A

About 27.3 days.

26
Q

How long does it take for the moon to go through its phases?

A

29.5 days

27
Q

In which two ways can the two eclipses occur?

A

Total or partial (Be able to identify in a picture and describe them)

28
Q

How do tides happen?

A

The gravitational pull of the Moon and Sun against the Earth.

29
Q

How many high and low tides are there each day?

A

Two high and two low tides. This is due to the consistent time of moon rise and moon set, as well as the phases of the moon.

30
Q

Why is there a change between the high and low tides each day?

A

Due to the moons orbit around the Earth.

31
Q

Define Neap tide:

A

Smallest change in height from high tide to low tide. During this, the moon is at a right angle to Earth.

32
Q

Define Spring tide:

A

The Greatest change in height from high tide to low tide. The Sun, Earth, and Moon are all lined up.

33
Q

Define Umbra:

A

Darkest part of the shadow cast by the moon.

34
Q

Define Penumbra:

A

The lighter part of the Moon’s shadow.

35
Q

How many lunar phases does the moon have?

A

8

36
Q

List the different phases of the moon: (Be sure to know what each phase looks like and the order in which they occur)

A

Third/last quarter, Waning gibbous, waxing gibbous, full moon, new moon, waxing crescent, waning crescent, First quarter.

37
Q

How long does each phase of the moon last?

A

About 3-4 days.

38
Q

How often do tides occur?

A

Every 12 hours, from high tide to high tide.

39
Q

How is the moon able to shine at night?

A

When the sun reflects off of the moon’s surface.

40
Q

Explain the difference between a waning moon and waxing moon:

A

A waning moon has increasing darkness, while a waxing moon has increasing light.

41
Q

When does a spring tide occur?

A

When the Sun, Earth, and Moon are lined up.

42
Q

When does a neap tide occur?

A

During a first or third quarter moon.

43
Q

What type of moon does there have to be for a spring tide to occur?

A

full or new moon

Science (19 decks)

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