Chapter 13: Meteoroid, Asteroid, Comet

Question 1

What is a meteoroid?

Answer 1

A floating piece of stone and metal that moves in space

Question 2

What is an asteroid?

Answer 2

Asteroid is a large metal and rocky body that travels around the Sun in its own orbit

Question 3

What is a comet?

Answer 3

A comet is a small body made up of a mixture of ice, gas and frozen dust that also travels around the Sun in its own orbit

Question 4

State the size range of a meteoroid

Answer 4

10ųm-1m (ų=micro)

Question 5

What made up meteoroid?

Answer 5

stones and metals

Question 6

From where did meteoroids originate?

Answer 6

asteroid and comets

Question 7

What is meteoroid’s surface temperature?

Answer 7

0℃

Question 8

Does the meteoroid has an orbit?

Answer 8

no

Question 9

What is the meteoroid’s fastest travelling speed?

Answer 9

42kms per second

Question 10

State the size range of an asteroid

Answer 10

1m-1000km

Question 11

What is an asteroid made up of?

Answer 11

stones and metals

Question 12

What is the surface temperature of an asteroid?

Answer 12

-73℃

Question 13

What is an asteroids average speed?

Answer 13

25km/s per second

Question 14

Where is the asteroid belt?

Answer 14

between the orbits of Mars and Jupiter

Question 15

State 3 types of asteroid

Answer 15

C type -> made out of carbon
S type -> made out of silicate materials
M type ->metallic

Question 16

Which has a bigger impact, meteoroid or asteroid?

Answer 16

asteroid, cause it’s bigger in size

Question 17

What are the 2 main parts of a comet?

Answer 17

head and tail

Question 18

How long can the tail and head of comet reach?

Answer 18

tail: 150 000 000km
head: 250 000km

Question 19

How is a comet formed?

Answer 19

comprises gas and water that freeze into ice, dust and rocky particles

Question 20

What is the comet’s orbit shape?

Answer 20

elliptical

Question 21

What is the comet’s average speed range?

Answer 21

10km/s per second - 70km/s per second

Question 22

What is the ‘last seen’ comet?

Answer 22

Halley’s comet, appeared last in 1986

Question 23

State the movement of a meteoroid

Answer 23

Meteoroid(in space) →Meteor(enters the earth atmosphere)→meteorite (on earth’s surface)

It moves because of the strong gravity pull of other planets/ earth

Question 24

State the movement of an asteroid

Answer 24

Orbits outside the asteroid belt intersect with the orbit of Earth→collisions happen

Question 25

What are the three asteroid orbits that are outside of the asteroid belts?

Answer 25

apollo
aten
amor

Question 26

State the movement of a comet

Answer 26

move faster to the Earth, melts and appears to have a long tail (rail always away from sun)→ strong gravatitional pull causes it to slip out of orbit→crash to the earth

Question 27

What are the 3 projects made to protect earth from asteroid impacts?

Answer 27

DE-STAR: Deflect asteroid and comets endangering the planet
Kinetic impacter: Defleact asteroid into different direction
Nuclear bomb: break asteroids