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zScience > Space and Earth > Flashcards

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
Q

mass =

A

how many atoms in a thing

26
Q

what proves that the earth is a sphere?

A

a ship going out to sea and goes out of sight

27
Q

what proves that the earth spins on its axis?

A

we have a day and night

28
Q

what proves that the earth orbits the sun and the earth’s axis is tilted.

A

we have a summer and winter

29
Q

what proves that The earth orbits the sun?

A

one year on earth is 365 days

30
Q

what supports what pluto is a planet?

A

it orbits the sun

31
Q

what says that pluto is not a planet?

A

orbit is a different angle

32
Q

true or false, both planets + moons have atmospheres

A

true

33
Q

why is it so hard for scientists to decide if Pluto is a planet?

A

scientists can’t decide on what a planet is

34
Q

how much is the weight of an astronought on the moon than on the earth

A

the weight is on the moon is less than the earth

35
Q

how much is the mass of an astronought on the moon than on the earth

A

the mass is on the moon the same as the earth

36
Q

how does the time for a planet to orbit the sun change with its distance?

A

the greater the distance the greater the time of one orbit

37
Q

when is a comets path around the sun fastest ?

A

when it is closest to the sun

38
Q

the orbit of what planet is betwenn saturn and mars?

A

Jupiter

39
Q

name the star in our solar system

A

the sun

40
Q

name one planet that is closer than mars to the sun

A

mercury/Venus/Earth

41
Q

why is there a day and night on mars

A

it rotates on it axis

42
Q

why is there seasons on mars

A

mars axis is tilted

43
Q

why are neptune and pluto the coldest plantets

A

they are farthest from the sun

44
Q

why is there no liquid water on mars

A

water freeses

45
Q

why is there no liquid water on venus

A

water boils.

46
Q

which palnet has the shortest day?

A

Jupiter

47
Q

which planet has the shortest year

A

Mercury

48
Q

what keeps a telescope in orbit

A

gravity

49
Q

on what planet is the gap between sunrise and sunset the shortest?

A

Jupiter

50
Q

which planet has the shortest year

A

mars

51
Q

WHAT KEEPS A SATALITE IN ORBIT

A

GRAVITY

52
Q

what are the uses of a sattelite?

A 
To look at stuff
GPS
internet
telecommunications
weather
53
Q

why can you see the sun?

A

it produces light

54
Q

why can you see the moon

A

it reflects light

55
Q

what is the order of the planets

A

mercury,venus,earth,mars,jupiter,saturn,uranus,neptune

zScience (4 decks)

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