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Undeleted > Astronomy unit 1 > Flashcards

Astronomy unit 1 Flashcards

1
Q

Planet

A

Anything that orbits a star

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2
Q

Solar System

A

Sun, planets, and various other bodies

Star with planets

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3
Q

Galaxy

A

Group of millions or billions of stars held together by their own gravity

Group of stars held together by gravity

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4
Q

Universe

A

Everything- space &all the matters & energy in it

Everything

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5
Q

Orbit

A

Path of an object in space as it moves around another object because of gravity

Path around another object

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6
Q

Constellation

A

Group of stars that form a pattern in the sky

Group of stars that form a pattern

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7
Q

Smallest to biggest

Planets, galaxy, moons, universe, stars, solar system

A

Moons, planets, stars, solar system, galaxy, universe

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8
Q

What causes the different groupings of space objects?

A

Gravity

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9
Q

What would happen to the pattern of stars in a constellation if viewed from the side?

A

It wouldn’t be the same pattern

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10
Q

The North Pole points to which star?

A

Polaris

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11
Q

Why do constellations appear to change position over time?

A

Because the Earth spins

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12
Q

What are the so called “wanderers” that appear to move through a constellation?

A

The planets

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13
Q

Electromagnetic Radiation

A

Energy that travels across distances as certain types of waves

Energy from the sun

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14
Q

Spectrum

A

Range of wave lengths

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15
Q

Wavelength

A

Distance between 2 peeks

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16
Q

Telescope

A

Device that gathers electromagnetic radiation

Electromagnetic radiation

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17
Q

Reflective telescope

A

Uses a mirror

Fat & short

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18
Q

Refracting telescope

A

Uses lenses

Bends light

Long & skinny

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19
Q

What is Earth’s major source of electromagnetic radiation?

A

Sun

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20
Q

List 7 forms of the electromagnetic spectrum from LONGEST wavelength to SHORTEST

I only have 6 forms

A

Radio waves, microwaves, infrared, ultraviolet, x-rays, gamma rays

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21
Q

Which category would the color blue belong to?

A

Visible light

22
Q

Why are the most powerful telescopes built on top of mountains?

A

Less atmospheric interpherence

23
Q

Why do radio telescopes have to be so large?

A

They pick up radio waves

Radio waves have a long/large wave length

24
Q

Why are radio telescopes usually grouped with other radio telescopes?

A

They combine the signals to make 1 image

25
Q

What advantages do radio telescopes have over light telescopes?

A

There’s no atmospheric interpherence

26
Q

What is the Hubble space telescope?

A

A radio controlled reflecting telescope that travels through space

27
Q

Satellite

A

An object that orbits a more massive object

Smaller object that goes around a bigger object

28
Q

Space Station

A

A large artificial satellite used as a long-term base for manned operations in space

29
Q

Flyby

A

Flys past planets & takes pictures

Takes pictures of several planets

30
Q

Orbiter

A

Goes around planets & maps the surface

Maps the surface

31
Q

Lander

A

Lands & collects samples

32
Q

Probes

A

Measures properties of atmospheres, before it’s destroyed

Measures atmosphere before it explodes

33
Q

List some of the supplies that astronauts need to bring with them into space

A

Water, food, oxygen/air, reliable equipment

34
Q

What 2 countries were in a race to the moon?

A

USA & Soviet Union (Russia) USSR

35
Q

What country launched the 1st satellite into space & also sent (Sputnik) the 1st human into space?

A

USSR (Russia/ Soviet Union)

36
Q

What country landed the 1st humans on the moon?

A

USA

37
Q

How much rock and soil was brought back from the moon?

A

380 kilograms (weighing 840 lbs)

38
Q

What is the international space station?

A

Orbits the Earth

Satellite in which people live and work for long periods of time

39
Q

What experiments on the ISS are further understanding of cancer and other diseases?

A

Cell tissue experiments, grow very quickly in space

40
Q

What is the main difference between space shuttles and early space craft?

A

Shuttles can be reused

41
Q

Give an example how missions could or have been combined

A

Mars Rover

42
Q

Impact crater

A
  1. A large object from space falls toward the surface at a very high speed
  2. The object explodes as it strikes the surface, compressing and fracturing the rock underneath
  3. As the rock springs back from the impact, material is thrown out of the crater

A hole in the ground from an exploding space rock

43
Q

How do scientists learn about Earth by comparing it to other planets and moons?

A

How liquid water affects our atmosphere

44
Q

Why doesn’t Earth have very many impact craters on it’s surface?

A

It’s constantly being worn down by wind and water and altered by forces beneath the surface (plate technics)

45
Q

What do scientists learn specifically about Earth’s water by studying other planets atmospheres?

A

How liquid water affects our atmosphere

46
Q

What phenomenon do scientists think have caused periods of cooling on the Earth?

A

Some ice ages have been triggered by the sun having cooling periods

47
Q

List 2 examples of how space technology has improved different satellites around Earth

A

Mapping & weather

48
Q

Why does everything on a space craft have to be so lightweight and durable?

A

In order to take off it needs to be light

There’s no tow truck in space, your on your own

49
Q

What occupation has used space technologies to improve protective suits?

A

Firefighters improved because of the NASA programs

50
Q

Scientists have learned that gravity works the SAME way in space as it does on Earth

True/false

A

True

51
Q

The moon has FEWER impact craters than Earth

True/false

A

False, more

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