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Science Test Review (Galaxy) > Space > Flashcards

Space Flashcards

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1
Q

What is the planet closest to the sun?

A

Mercury

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2
Q

What is the planet second closest to the sun?

A

Venus

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3
Q

What is the planet third closest to the sun?

A

Earth

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4
Q

What is the planet fourth closest to the sun?

A

Mars

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5
Q

What is the planet fifth closest to the sun?

A

Jupiter

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6
Q

What is the planet sixth closest to the sun?

A

Saturn

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7
Q

What is the planet seventh closest to the sun?

A

Uranus

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8
Q

What is the planet eighth closest to the sun?

A

Neptune

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9
Q

What is a solar eclipse?

A

It is when the moon passes between sun and earth, casting a shadow on earth that either partially or fully blocks the suns light in some areas

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10
Q

What is a lunar eclipse?

A

It is when the moon moves into the earths shadow, causing the moon to be darkened

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11
Q

What is the smallest planet and largest planet?

A

Mercury (smallest) and Jupiter (biggest)

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12
Q

What is the hottest and coldest planet?

A

Venus (hottest) and Uranus (coldest)

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13
Q

What planet has a day which is longer than its year?

A

Venus

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14
Q

What planet has the longest year?

A

Neptune

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15
Q

What planet has the shortest year?

A

Mercury

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16
Q

What planet has the most rings?

A

Saturn

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17
Q

What is the second largest planet?

A

Saturn

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18
Q

What is the third largest planet?

A

Uranus

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19
Q

Between what two planets would you find the asteroid belt?

A

Mars & Jupiter

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20
Q

8 phases of the moon

A

New moon, waxing cresent, first quater, waxing gibous, full moon, waining gibous, third quater, waining cresent

21
Q

What is the scientific name for the northern lights?

A

Aurora Borealis

22
Q

What is the scientific name for the southern lights?

A

Aurora Australis

23
Q

Why does the Aurora occur close to the poles?

A

Because of the shape of the earths magnetic field, the magnetic field lines create two ovals of aurora around the north and south poles

24
Q

What is a galaxy?

A

A galaxy is a large collection of stars, planets, moons, nebulas, asteroids, comets, etc, and often orbits a large central black hole

25
Q

What is a Meteoroid?

A

A metal/rock travelling through space

26
Q

What is a Meteor?

A

A meteoroid that has entered the atmosphere

27
Q

What is a meteorite?

A

A meteor that has impacted and survived

28
Q

How is a comet different from a meteoroid?

A

Comets are made up of ice dust and rock while meteoroid are made of metal or rock

29
Q

How long is a year on earth?

A

365.25 days

30
Q

How long is a year on any planet?

A

A year is the amount of time it takes to completely orbit around the sun once

31
Q

What is a day?

A

The amount of time it takes a planet to rotate once on its axis

32
Q

What is a solstice?

A

The point where the sun appears to reach either its highest or lowest point in the sky for the year

33
Q

What is an equinox?

A

The time or date at which the sun crosses the celestial equator

34
Q

What are the two solstices?

A

Summer and winter solstices

35
Q

What are the two equinoxes?

A

Autumn and spring equinoxes

36
Q

What is the scientific name for the earths wobble?

A

Precession

37
Q

How many degrees is the earth tilted?

A

About 23.5 degrees

38
Q

Why does the earth have seasons?

A

The earths spin axis is tilted with respect to its orbital plane

39
Q

What causes tides?

A

The gravitational forces exerted on the earth by the moon, and to a lesser extent, the sun

40
Q

What is a constellation?

A

A group of stars that make an imaginary shape in the night sky

41
Q

What is a stars luminosity?

A

The total amount of electromagnetic energy emitted per unit of time by a star, galaxy, or other astronomical objects

42
Q

What is absolute magnitude?

A

How bright a star would appear if viewed from 33 light years away

43
Q

What is apparent magnitude?

A

Value based upon how bright the star looks from earth

44
Q

What is a nebula?

A

A giant cloud of dust and gas in space

45
Q

What unit is used to define a stars mass?

A

Solar mass

46
Q

What are the two likely outcomes of a large star going super nova

A

Neutron star or black hole

47
Q

What are the 4 main types of classification for galaxies?

A

Spiral, eliptical, irregular, pecularlenticular

48
Q

How does a star produce energy?

A

By a process called nuclear fusion, which releases energy, which heats the star and prevents it from further collapsing under the force of gravity

Science Test Review (Galaxy) (1 decks)

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