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Science > 13 metoerid come and slay > Flashcards

13 metoerid come and slay Flashcards

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1
Q

What is a meteoride

A

Floating piece of stone and metal that moves in space

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2
Q

What is an asteroid

A

Large metal and rocky body that travels around Sun in its own orbit

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3
Q

What is a comet

A

Small body of mixture of ice, gas & frozen dust
Travels around sun on its own orbit

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4
Q

What is size of meteroid

A

10 µm (micrometer) to 1m

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5
Q

Meteroid is made of what & originates from?

A

Stones and metals - iron & nickel
Fragments of asteroids & comets

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6
Q

What is surface temperature & speed of meteroid

A

0C
varying speed, fastest - 42km/s

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7
Q

What is size of asteroid

A

1m - 1000km
Large asteroids - Ceres, Pallas, Juno, Vesta ~ diameters of a few km - 1000 km

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8
Q

What is surface temperature & speed of asteroid

A

Cold, -73C
25km/s

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9
Q

Asteroids form an

A

Asteroid belt between orbits of Mars & Jupiter

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10
Q

Asteroids are know as

A

Small planets

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11
Q

Comet is made of what parts & length

A

Tail - 150 000 000km
Head - 240 000km

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12
Q

What is comet made of

A

Gas & water that freeze into ice
Dust
Rocky particles

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13
Q

How does comet travel & what speed

A

Around Sun in its own elliptical orbit
10km/s - 70km/s

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14
Q

Difference in movement of meteoroids, asteroids & comets

A

Asteroids & comet - have their own orbit around Sun
Meteoroids - Move freely in space & influenced by gravitational pull of planets, moon & other objects

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15
Q

When is it called a meteor

A

Meteoroid enters Earth’s atmosphere
Molecular friction between air & meteor -> heat -> burns & streak of light

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16
Q

What is a meteor shower

A

When many meteors enter Earth at same time

17
Q

What are meteorites

A

Meteors that can reach Earth
Usually meteors will burn our before reaching earth
Will form craters

18
Q

Which asteroids have asteroid orbits outside asteroid belt

A

Apollo
Amor
Aten

19
Q

Why are orbits outside asteroid belt dangerous to Earth

A

Can be near / intersect with Earth orbit
Collision can happen at intersection point / trails near orbit
Result in destruction of living things

20
Q

Most comets are from?

A

Kuiper belt & Oort cloud

21
Q

State the effect on Sun on comet’s tail

A

Gets closer to sun, increases in speed, melts, long tail
Tail aways away from Sun - solar wind blowing from Sun

22
Q

What causes comet to easily slip out of orbit

A

Strong gravitational pull of outer planets

Science (21 decks)

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