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Science Form 3 Flashcards

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1
Q

A meteoroid that burns up in Earth’s atmosphere is called a?

A

Meteor

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2
Q

What is a rock from space that strikes the Earth’s surface?

A

Meteorite

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3
Q

Which of the following objects is referred to when a shooting star appears in the sky?

A

Meteor

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4
Q

In what direction do comet’s tail point?

A

Away from the sun

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5
Q

Between which two planets’ orbits does the asteroid belt occur?

A

Mars and Jupiter

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6
Q

What shape are the orbits of most comets?

A

Long, Narrow Elipses

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7
Q

Meteoroids usually come from?

A

Comets or Asteroids

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8
Q

When a meteoroid enters Earth’s atmosphere, it produces a streak of light called a?

A

Meteor

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9
Q

Small pieces of rock that travel through space with no predictable or recognizable path are called?

A

Meteoroids

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10
Q

The biggest asteroid ever known is the?

A

Ceres

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11
Q

Where do meteoroids come from?

A

Asteroids, Comets, Mars or Moon

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12
Q

Interplanetary material that enters the Earth’s atmosphere and collides with the ground rather than burning up is called a?

A

Meteorite

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13
Q

The result when Earth intersects a cometary orbit is a?

A

Meteor shower

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14
Q

Flaming meteoroid

A

Meteor

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15
Q

Large irregular-shaped object, potentially dangerous to Earth

A

Asteroid

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16
Q

Dirty Snowball a few kilometers in diameter with long periods of orbits around the Sun?

A

Comet

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17
Q

A meteorite is a?

A

Small chunk of space rock that hits the Earth

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18
Q

Ceres and Ida

A

Asteroid

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19
Q

How big are asteroids?

A

GREATER than 100m in diameter

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20
Q

What is the most common shape of an asteroid?

A

Irregular

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21
Q

The Orionids

A

Meteor

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22
Q

Hale-Bopp and Shoemaker-Levy 9

A

Comets

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23
Q

They are occasional visitors from space and they usually have eccentric orbits.

A

Comets

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24
Q

What are comets made of?

A

Rock, Ice, and Gas

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25
Where are asteroids found?
Asteroid belt
26
These share an orbit with a large planet or the moon.
Trojan asteroids
27
Most watched because they have the most potential of hitting the Earth.
Near Earth Asteroids
28
How many NEAs are there?
7075
29
How big are NEAs?
1 km in diameter
30
Two types of comets?
Long-period and short-period
31
Do comets emit light?
No, they reflect light from the sun
32
This is the extremely unstable atmosphere in a comet
Coma
33
This points away from the sun
Tail
34
These are fragments of rocky material
Meteoroid
35
This causes meteor showers
Comets
36
How do we call small meteoroids?
Micrometeoroids, or Cosmic Dust
37
Do Meteoroid emit their own light?
No.
38
This is made of solid ice and rock
Comets
39
Longest part of a comet
Tail
40
This is the name you call a meteor, when a meteor's glow is greater than a planet's glow.
Fireball
41
What do we call a fireball that has exploded?
Bolides
42
This is the most common type of meteoroid
Stony in nature, mainly silicates, and some iron and nickel
43
These are a swarm of comets away from the sun
Oort cloud
44
When does a comet's tail get longer?
When it gets closer to the sun
45
When does a comet have the longest tail and the largest coma?
When it is nearest the sun
46
This is also known as "dirty ice"
Nucleus
47
This is the curved tail of a comet
Dust tail
48
Global temperature would decrease once the Earth is struck by an asteroid. (T or F)
T (the resulting dust cloud would block out the sun)
49
The smallest size of a meteoroid to survive through the mesosphere is?
The size of a fist
50
Meteor showers happen when--
The earth passes through a trail of comet debris
51
This is the straight tail of a comet
Ion tail
52
This is the only part of a comet that lasts once it is far away from the sun
Nucleus
53
Arrange the 3 space debris we learned from biggest to smallest
Asteroids, Meteoroids, and Comets
54
Where do meteoroids come from?
Comets, and Asteroids
55
Comets are made of organic material. (T or F)
T
56
Asteroids also collide against each other. (T or F)
T
57
Asteroids do not revolve around the planets. (T or F)
F
58
Do asteroids emit their own light?
Yes
59
What do you call the spaces in between the asteroids?
Kirkwood Gap
60
These are also known as minor planets or planetisimals.
Asteroids
61
The tail point away when it is at it's perihelion. (T or F)
T
62
These are NEAs that are between Mars and Earth
Atens
63
What is the transformation of energy? (Meteor)
Kinetic ---> Heat ---> Light
64
These are considered to be "star-like"
Asteroids
65
"Suspended in the air"
Asteroids
66
What are meteor showers named after?
Constellations and location of their landing
67
These are random meteor showers
Meteor Outbursts
68
Asteroids made of Nickel and Iron
Metallic Asteroids
69
Carbonaceous Asteroids are made of --
Carbon
70
Siliceous/Stony-iron Asteroids are made of--
Silicates
71
This is the path of the fireball
After-glow
72
What do you call a meteor shower that releases 1 meteor per second?
Meteor Storm
73
This is the brief after-glow behind a meteor
Wake
74
What are/is in the inner solar system?
Asteroids and Meteoroids
75
What are/is in the outer solar system?
Comets
76
These asteroids cross the Earth's orbit
Amor
77
Short-period comets come from the--
Kuiper Belt
78
Long-period comets come from the--
Oort Cloud
79
Meteoroids travel anywhere. (T or F)
T

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