Constellations Flashcards

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0
Q

Why do the stars appear to move?

A

Because of the Earth’s rotation.

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1
Q

What is a constellation?

A

A group of stars that form a pattern.

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2
Q

Name 3 constellations

A

Ursa Major, Centaurus and Scorpius.

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3
Q

How many constellations are there?

A

88

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4
Q

How are seasons created?

A

The tilt of the Earth causes parts of Earth to receive different amounts of sunlight throughout the year.

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5
Q

During which seasons are the hours of daylight and night equal?

A

Autumn and Spring

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6
Q

During which season does the northern hemisphere receive the least amount of sunlight?

A

Winter

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7
Q

What are the parts of the solar system?

A
  1. Sun,
  2. 9 planets,
  3. moons
  4. asteroids
  5. comets
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8
Q

Which planet travels faster, Mercury or Neptune?

A

Mercury

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9
Q

The closer to the sun the planet is, the faster/slower it travels?

A

Faster

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10
Q

Which 2 planets are closer to the sun?

A

Mercury and Venus.

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11
Q

What is the largest body in the solar system?

A

The Sun!

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12
Q

Which planet is farthest from the Sun?

A

Pluto

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13
Q

Which is the largest planet in diameter?

A

Jupiter

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14
Q

Which planet’s diameter is closest to Earth’s diameter?

A

Venus

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15
Q

What is a galaxy?

A

A huge system of stars and dust and gas held together by gravity.

16
Q

What is black hole?

A

A point in space that has such a strong force of gravity that nothing within a certain distance of it can escape.

17
Q

What is a group of stars that form a pattern called?

A

A Constellation

18
Q

What is a Super Nova?

A

A gigantic explosion that occurs near the end of the life of a star.

19
Q

What is it called when stars form in a cloud called?

A

Nebula

20
Q

What is a light year?

A

The distance light travels in 1 year.

21
Q

Explain 2 factors

A
  1. How far away it is from the Earth

2. How hot it is

22
Q

Explain what a sun spot is.

A

A dark, black spot on the sun that is not as hot as the rest of the photosphere

23
Q

Explain the pattern that exists in the number of sunspots that are observed.

A

The number of sunspots changes in cycles of about 11 years. Sometimes there are many, and sometimes there are few.

24
Q

Explain 2 reasons for sending telescopes into space.

A
  1. To explore our solar system

2. To explain how our planets were made.

25
Q

Why do stars appear to move across the sky?

A

Because the Earth rotates on its axis.

26
Q

Name 2 galaxies and what they look like.

A
  1. Spiral Galaxy: The look like pinwheels with bright, bulging arms that fan out from the center. Most galaxies are spirals.
  2. Eliptical Galaxy: Can be almost round or more oval like a football. The largest galaxies that we know of are eliptical.
27
Q

Explain why a star farther from the Earth is brighter that one closer.

A

It is hotter making it brighter and it is larger.

28
Q

Name the 3 layers of the sun

A
  1. Photosphere (Inside)
  2. Chromosphere (middle)
  3. Corona (Outer layer)
29
Q

Which layer of the sun gives off the light energy that we see?

A

The Photosphere

30
Q

Watching the movements of the Sun, Moon, and stars was important to ancient cultures because it helped them do what?

A

Predict the seasons and know when to plant crops.

31
Q

Galileo discovered that…

A
  1. The moon has mountains
  2. The sun spins.
  3. Venus has phases like the moon.
  4. Jupiter has 4 moons
  5. The Earth and the other planets revolved around
    the sun.