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Science 9 JAMES > Unit 5 Exam > Flashcards

Unit 5 Exam Flashcards

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1
Q

What is a frame of reference?

A

It is a set of axes of any kind that is used to describe the positions or motions of things.

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2
Q

What is Altitude and azimuth?

A

Altitude- the angle above the horizon. (only up to 90*)

Azimuth- An angle measured clockwise from the north.

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3
Q

What did the early people see in the sky?

A

DJ

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4
Q

What 5 main things did early civilizations notice?

A

*

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5
Q

Explain the Geocentric model

A

That earth is the center of the universe and all planets revolve around us

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6
Q

Explain the heliocentric model

A

*Sun is the center of the universe and all planets revolve around the sun

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7
Q

What are the main parts of the telescope?

A

Objective an eye peas lenses

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8
Q

How did the telescope become what it is today?

A

*

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9
Q

What are the shapes(longer or smaller) of each type of telescope?

A

*

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10
Q

What was Galileo’s observations on orbiting planets caused by?

A

Caused by newtons law of gravity where gravity pulls planets towards the earth and the force of inertia pushes planet straight therefore causing them to orbit and an elliptical matter

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11
Q

What are spectral lines?

A

Lines that show what something is made up of

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12
Q

What are the three types of spectra?

A

Dark line spectrum
Colored line spectrum
Bright line spectrum

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13
Q

What are diffraction gratings?

A

*

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14
Q

Explain the Doppler effect?

A

Changing the pitch of something when it’s closer and farther

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15
Q

What does red shift, blue shift mean? what does the Doppler effect do to sound waves in Christmas?

A

Red shift-away

Blue shift-towards

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16
Q

What is the benefit to combining telescopes?

A

Clearer better image

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17
Q

Explain adaptive optics

A

They get rid of the twinkling in the stars

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18
Q

GRApes

A

your hair looks nice like that

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19
Q

What is triangulation? Why we use it?

A

To figure out the distance of a far away object

20
Q

What does AU stand for?

A

Astronomical unit

21
Q

Whats a light year?

A

How far light travels in a year

22
Q

What ARE THE TYPES OF Electromagnetic radiation?

A

UV Rays
micro waves
x Rays

23
Q

What is radio astronomy?

A

The science of using electromagnetic radiation

24
Q

What are radio telescopes and how do they work?

A

Radio telescopes are telescopes that use electromagnetic radiation

25
Q

What is interferometry? What is VLBI?

A

VERY LARGE BASELINE INFERTERONOMY

Combining two telescopes to get a better picture

26
Q

What are blaistic missiles, rockets and how do they work?

A

The rockets that use bombs to take off

27
Q

What is a payload and what type of fuel do rockets use?

A
  • they use combustible engines and a payload is the part where they hold stuff like people or equipment
28
Q

What is gravitational assist and how does it work?

A

Changing Direction of satellites orbit by going past the planet and using it’s gravity

29
Q

What are CCD’s? How do they work?

A

*

30
Q

What is the Hubble telescope and whats its purpose?

A

It is a telescope outside of the earths atmosphere and is used to take pictures of Earth

31
Q

What is an artificial telescope, their purpose and their orbit type?

A

They are telescopes made by man to see things

32
Q

What is remote sensing? What is it used for?

A

When telescopes and satellites can see and tell people about burning fires and clearcuts

33
Q

What is a GPS, how do thy work, what are they used for and who developed it?

A

GPS is are used to figure out where you are on earth and they are satellites in the universe that keep track of where we are

34
Q

What is the sun and whats it mostly made of?

A

The sun is the biggest star in our galaxy right in the center and it’s made up of mostly hydrogen

35
Q

What are the inner and outer planets and why are they grouped that way?

A

*

36
Q

What was the purpose of the Voyager?

A

*

37
Q

What is the life of a star?

A

*

38
Q

What spacecraft where the first to orbit earth?

A

Sputnik 1 and Vostok 1.

39
Q

What did the spacecraft Freedom 7 preform?

A

*

40
Q

What was the main goal of the Apollo program? (Apollo spacecraft)?

A

To put a spacecraft into The universe

41
Q

What was the purpose of the join mission between Apollo and Soyuz.

A

*

42
Q

Why do space craft need life support systems?

A

*because it is unsuitable to live in space without certain earthlike factors like pressure and oxygen

43
Q

Why are the modern space shuttles more efficient, and what part of the shuttle is important to Canada?

A

*they are reusable and the Canada arm

44
Q

What are the physical and mental effects on astronauts?

A

*mental is that you’re with the same people for a long time and you don’t see anything else besides the spaceship
Physical is that you don’t have lots of oxygen you don’t get the right vitamins from the sun and the pressure is different in space

45
Q

The sun is 110x the diameter of what?

A

The Earth

Science 9 JAMES (3 decks)

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