Space Flashcards

(55 cards)

1
Q

What is the function of the atmosphere?

A
  • Protects earth from the Sun’s harmful rays
  • Allows us to breath
  • Keeps the earth warm (right temperature for living things to survive)
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2
Q

What is our nearest star?

A

The Sun

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3
Q

What is the difference between an ocean and a sea?

A

Ocean is much larger.

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4
Q

What is the atmosphere?

A

The letter of air (gases) that surround the earth

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5
Q

What is earth’s atmosphere made up of?

A

Many gases such as:
* Oxygen
* Nitrogen
* Carbon dioxide

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6
Q

Is earth a terrestrial or gaseous planet?

A

Terrestrial

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7
Q

How much of the earth’s surface is covered with water?

A

71%

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8
Q

What shape is the earth?

A

Sphere

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9
Q

What are the features of earth?

A

Is the 3rd planet from the sun.
It is a spherical shape, made up of rock which is solid except for the inner core (which is hot molten).
Covered with water (71%)
Covered with a layer of gases (oxygen, nitrogen, carbon dioxide) called the atmosphere.

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10
Q

What is the difference between sand and soil?

A

Soil is sand with dead and rotten material (plants and animals) in it.
Sand is just eroded rock

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11
Q

What color does earth appear from space? Why?

A

Blue
Because it is morally covered in water

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12
Q

List the continents

A

Europe
North America
South America
Africa
Australia
Antarctica
Asia

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13
Q

How far above the earth’s surface does the atmosphere extend?

A

600km

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14
Q

What is a habitat? Give some examples

A

The place where something lives.
Eg.
* a lake (for fish etc)
* a Savannah (for lions etc)
* a desert (for camel)

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15
Q

What is the nearest object to Earth in space?

A

Moon

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16
Q

What is a planet ?

A

A large object that orbits a star.

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17
Q

What kind of energy does the sun emit?

A

Light and heat

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18
Q

How many times bigger is the Sun’s diameter than earth’s?

A

110 times bigger

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19
Q

How far away from the sun is earth?

A

About 150 million kilometers

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20
Q

What is an orbit?

A

The pathway that a planet goes around a star or a satellite goes around a planet.

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21
Q

What is the solar system?

A

The sun and all the objects that orbit it

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22
Q

What is the pathway that earth moves around the sun called?

A

An orbit

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23
Q

What direction does the earth travel around the sun?

A

Anticlockwise

24
Q

What is at the center of the solar system?

25
What is the word for sun in Latin?
Sol
26
How many stars in the solar system?
One (the sun)
27
How does the sun support life on earth?
By providing light and heat energy
28
What starts all energy chains on earth?
The sun’s light
29
What do seeds need warmth for?
To grow
30
What do animals need rest for?
To maintain their life processes
31
What are the seven life processes?
Respiration Consuming Growth Movement Sensitivity Excreting Reproduction
32
What are the defining characteristics of a planet? (What makes a planet a planet?)
A large sphere that orbits the around the sun, Which dominates its orbit.
33
What is a crater?
A round hole made by an asteroid hitting a body of rock
34
What is the moon made of?
Rock
35
Describe the surface of the moon
Not smooth. Dusty. Covered with pieces of broken rock. Has large holes called craters. Has no proper soil.
36
What have astronauts discovered about moon rocks?
They are similar to earth rocks
37
Why can the moon not support life?
There is no air and There is no liquid water It is never the right temperature
38
Where do scientists think there might be water on the moon?
As ice in shaded craters where it is cold
39
What is the distance from the moon to the earth, in kilometers?
384 400km
40
How long does it take light to travel to the earth from the sun?
8 min
41
How long does it take light to travel to the earth from the moon?
1.5 seconds
42
What is the closest body in space to earth?
The moon
43
In general, what are phases of the moon?
The different shapes of the moon due to the changing pattern of sunlight on the moon
44
How does the moon appear bright?
Sunlight reflecting from the surface of the moon. Moon does not produce its own light
45
Why does the moon not always look fully round?
Because the sun cannot shines on all of the moon at the same time. Only the part that the sunlight hits is lit
46
Name the phases of the moon
New moon Waxing crescent First quarter Waxing gibbous Full moon Waning gibbous Last quarter New moon
47
If it is a new moon now, how long until it is a new moon again?
29.5 days
48
What is a rocket?
Long tall structure that can be launched into space.
49
What does it mean to launch?
To send a space craft into space
50
What is gravity?
The force that keeps things on earth.
51
What is a payload?
The people, equipment or other space craft carried by a rocket
52
What is a vehicle?
A machine that is used to transport things and/or people from one place to another
53
What does it mean to propel?
To move something forward
54
What makes a rocket a system?
* It uses multiple parts that work together to make it launch. * It has an energy input of fuel * it has an energy output (big flames out of the bottom of it propelling it upwards)
55
Why does a rocket need energy?
To propel it fast enough to * escape earth’s gravity and * push through earth’s atmosphere and get into space