Space and Earth Flashcards

1
Q

what are the 3 magnetic metal?

A

Iron.
Cobalt.
Nickel.

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2
Q

what are stars?

A

Stars are huge balls of gas that give out large amounts of energy.

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3
Q

what is the sun

A

a star

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4
Q

why is the sun brighter than other stars

A

The stars you see at night do not seem very bright compared with the Sun because they are much further away.

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5
Q

why can’t we see stars during the day?

A

We cannot see them during the day because light from them is very faint compared with the light from the Sun

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6
Q

what is a collection of stars called

A

. A collection of stars grouped together is called a galaxy.

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7
Q

what galaxy are we in

A

We are part of a galaxy called the milky way.

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8
Q

what is the gap between galaxies called?

A

All the galaxies and the space between them is called the Universe

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9
Q

how do we measure the gap between galaxies

A

We measure the gap between galaxies in light-years.

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10
Q

what is the speed of light?

A

Speed of light = 3x108m/s

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11
Q

How far away do you think it is to the next star?

A

4.2 Light years

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12
Q

How far away is the next galaxy?

A

2.2 million light years

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13
Q

How long does it take light to travel from one side of the universe to the other?

A

4.6 billion light years

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14
Q

How long does it take the Suns light to reach Earth?

A

8 minutes and 20 seconds

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15
Q

Planet

A

A large object orbiting a star. The Earth is a planet.

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16
Q

Satellite

A

Anything that orbits a planet or a moon.

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17
Q

Constellation

A

A pattern of stars. The stars in a constellation are not usually close together, they only appear to be close when seen from the Earth.

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18
Q

Solar system

A

A star with planets and other objects orbiting around it.

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19
Q

Gravity

A

The force of attraction between any two objects

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20
Q

Galaxy

A

Millions of stars grouped together.

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21
Q

Hemisphere

A

Half of a sphere – the shape you would get if you cut a solid ball in half.

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22
Q

Magnetic field

A

The space around a magnet where it can affect magnetic materials or other magnets.

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23
Q

North seeking pole

A

The end of a magnet that points north if the magnet can move freely. Often just called the north pole.

24
Q

Light year

A

The distance that light travels in one year.

25
mass =
how many atoms in a thing
26
what proves that the earth is a sphere?
a ship going out to sea and goes out of sight
27
what proves that the earth spins on its axis?
we have a day and night
28
what proves that the earth orbits the sun and the earth's axis is tilted.
we have a summer and winter
29
what proves that The earth orbits the sun?
one year on earth is 365 days
30
what supports what pluto is a planet?
it orbits the sun
31
what says that pluto is not a planet?
orbit is a different angle
32
true or false, both planets + moons have atmospheres
true
33
why is it so hard for scientists to decide if Pluto is a planet?
scientists can't decide on what a planet is
34
how much is the weight of an astronought on the moon than on the earth
the weight is on the moon is less than the earth
35
how much is the mass of an astronought on the moon than on the earth
the mass is on the moon the same as the earth
36
how does the time for a planet to orbit the sun change with its distance?
the greater the distance the greater the time of one orbit
37
when is a comets path around the sun fastest ?
when it is closest to the sun
38
the orbit of what planet is betwenn saturn and mars?
Jupiter
39
name the star in our solar system
the sun
40
name one planet that is closer than mars to the sun
mercury/Venus/Earth
41
why is there a day and night on mars
it rotates on it axis
42
why is there seasons on mars
mars axis is tilted
43
why are neptune and pluto the coldest plantets
they are farthest from the sun
44
why is there no liquid water on mars
water freeses
45
why is there no liquid water on venus
water boils.
46
which palnet has the shortest day?
Jupiter
47
which planet has the shortest year
Mercury
48
what keeps a telescope in orbit
gravity
49
on what planet is the gap between sunrise and sunset the shortest?
Jupiter
50
which planet has the shortest year
mars
51
WHAT KEEPS A SATALITE IN ORBIT
GRAVITY
52
what are the uses of a sattelite?
``` To look at stuff GPS internet telecommunications weather ```
53
why can you see the sun?
it produces light
54
why can you see the moon
it reflects light
55
what is the order of the planets
mercury,venus,earth,mars,jupiter,saturn,uranus,neptune