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Physics > Space > Flashcards

Space Flashcards

1
Q

What is newtons 3rd law

A

For every action there is an equal but opposite reaction

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2
Q

List what life support systems must have

A

Food, water, air, correct temperature and correct air pressure

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3
Q

What does an ion drive do

A

Creates thrust by accelerating ions with electricity and projects the spacecraft very far

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4
Q

What waves are used to understand the universe

A

Electromagnetic

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5
Q

Detector of radio and tv wave

A

Aerial and radio telescope

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6
Q

Detector of microwaves

A

Aerial and microwave reader

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7
Q

Detector of infrared

A

Photodiode and infrared telescope

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8
Q

Detector of visible light

A

Your retina and refracting telescope

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9
Q

Detector of ultraviolet

A

Fluorescent materials

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10
Q

Detector of X-rays

A

Photographic film

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11
Q

Detector of gamma rays

A

Photographic film and Geiger counter

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12
Q

How old is the universe

A

14 billion years

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13
Q

What is the force that pushes matter apart

A

Dark energy

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14
Q

Challenges of space travel

A

Travelling long distances in space, manovering in 0 friction, maintaining sufficient energy to operate life supporting systems

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15
Q

Why is there no friction in space

A

Space is a vacuum

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16
Q

Risks of space exploration

A

The fuel on board

17
Q

How to lesson exposure of radiation

A

The length of the space mission, selection of the crew, radiation shielding, drugs and supplements to lesson the effects of

18
Q

Is there air particle in space

A

No therefore there is no pressure

19
Q

When was the Hubble telescope launched

A

1990

20
Q

What does the Hubble telescope do

A

Provides scientists with great images and information about the age of the universe and black holes

21
Q

What is space defined as

A

The void between all celestial bodies

22
Q

What is the closest planet to the sun

A

Mercury

23
Q

What does every element produce

A

A line spectra

24
Q

What is a star

A

A large ball of matter that is undergoing nuclear fusion and emitting light and other forms of electromagnetic radiation

25
Q

How far is a light year

A

9.5x10 to the power of 15 m

26
Q

Describe the Big Bang theory

A

States that all current and past matter in the universe came into existence at the same time from a small point of energy that exploded from extreme force

27
Q

What are the three types of spectrum

A

Continuous spectrum, line absorption spectra and line emission spectra

28
Q

How do you determine the elements in a star

A

All elements emit a unique line spectrum, we can find this through spectroscopy and by visually lining these line spectra

29
Q

What is a satellite

A

An object in space that orbits around a larger object

30
Q

How do you calculate the distance light years

A

Distance (light years) = speed (speed of light 3x10to the 8 ms-1) x time

31
Q

List the uses of satellites

A

Telescopes and detectors of space exploration, global positioning systems (gps), satellite television allowing broadcasting to reach homes around the world and weather forecasting

32
Q

What is a moon

A

A natural satellite that orbits a planet or a large body in space that is not a star

33
Q

Solutions to the challenges of space travel

A

Large distances can be travelled using an ion drive, you can catapult a space craft by utilising the gravity of a large object such as a moon or an asteroid, energy can be generated on a spacecraft using solar cells

34
Q

What is the period and altitude of a geostationary satellite

A

Period is 24 hours
Altitude is 36,000 km

35
Q

How does the period of a satellite change with an altitude of the satellite

A

The higher the altitude, the greater the period

36
Q

What is a planet

A

A large ball of matter that orbits a star

37
Q

What is an exoplanet

A

A planet existing outside of our solar system

38
Q

What is a dwarf planet

A

planet an object that orbits a star, but is not large enough or roughly spherical enough to be classified as a small planet

39
Q

What is an asteroid

A

An orbiting object that is even smaller than a dwarf planet

Physics (2 decks)

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