Science Unit 1 Chapter 2 - 6th grade Flashcards

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0
Q

What are the 4 inner planets?

A

Mercury, Venus, Earth, and Mars

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1
Q

As the lit portion of the moon becomes smaller the moon is ___________

A

Waning

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2
Q

What 2 planets are between the asteroid belt?

A

Mars and Jupiter

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3
Q

The largest planet is _________.

A

Jupiter

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4
Q

The movement of one solar system object into the shadow of another objects called what.

A

Eclipse

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5
Q

This orbits the sun, is massive enough to be nearly spherical in shape and has no other object in its orbital path

A

Planet

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6
Q

Natural satellite that orbits an object other than a star.

Massive enough to be spherical.

A

Moon

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7
Q

Orbit the sun and are nearly spherical in shape but they share their orbit path with other objects of similar size.

A

Dwarf planet

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8
Q

When the Earth’s rotation axis is tilted directly towards or away from the sun. It also happens in June and Dec when N Roth Pole is towards the sun

A

Solstice

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9
Q

What are the 3 effects the moon’s motion have?

A

Phases of the moon

Changes in tides

Eclipses

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10
Q

A meteoroid because a meteorite only if it impacts Earth. True or False

A

True

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11
Q

Small, rocky objects that orbits the sun.

A

Asteroids

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12
Q

When a meteoroid enters Earth’s atmosphere it produces a streak of light called_____________

A

Meteor

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13
Q

Small rocky particles that move through space is called

A

Meteoroids

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14
Q

As the lit portion of the moon becomes larger.

A

Waxing

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15
Q

Other objects in the solar system formed from leftover gas and dust pulled by gravity into a _________

A

Disc

16
Q

The periodic rise and fall of the ocean’s surface caused by gravitational force between Earth and the moon and the sun

A

Tides

17
Q

This occurs when Earth’s rotation axis is tilted neither towards nor away from the sun. Also means equal night

A

Equinox

18
Q

The spin of an object around its axis

A

Rotation

19
Q

These 2 planets are known as the twin planets

A

Earth and Venus

20
Q

The orbit of an object around another object

A

Revolution

21
Q

Phases of the moon

A

New moon, waxing crescent, 1st quarter, waxing gibbous, full moon, waning gibbous, last quarter, waning crescent, full moon

22
Q

Small, rocky, icy object that orbits the sun.

As they near the sun the ice melts and the water forms a tail behind the comet.

They extend to the outer solar system.

A

Comets

23
Q

The distance light travels in one year.

A

Light year

24
Q

A large spree of hydrogen gas hot enough for nuclear reaction to occur in its core.

A

Star

25
Q

What is the difference between the inner and outer planets?

A

The inner planets are small and rocky and rotate slower.

The outer planets are larger and rotate faster.

26
Q

What is the Big Bang Theory?

A

The universe began from one point and has been expanding and cooling ever since. It happened 13-14 billion years ago

27
Q

Huge collection of stars, gas, and dust

A

Galaxy

28
Q

Astronomers classify galaxies by their shapes. What are the 3 main types/shapes of galaxies?

A

Elliptical, irregular, and spiral.

29
Q

Stars are different color because of their temperature. What are the colors from coldest to hottest?

A
Blue -hottest
Blue white
White
Yellow
Orange
Red - is the coolest