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Physics Nat 5 > Space Exploration > Flashcards

Space Exploration Flashcards

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1
Q

Moon

A

A natural satellite that orbits a planet

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2
Q

Star

A

Burning ball of gas

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3
Q

Salad system

A

Contains a central star with planets orbiting around it

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4
Q

Exo-planet

A

Planet out with our own solar system

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5
Q

Galaxy

A

A collection of solar systems

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6
Q

Universe

A

All galaxies collected

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7
Q

Planet

A

Large spherical object that orbits a central star

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8
Q

Visible light use

A

Spectroscopes used to analyse light from light producing objects
Indicate gases surrounding them

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9
Q

White light source

A

Made up of all the colours of the rainbow

CONTINUOUS SPECTRUM

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10
Q

Satellites are used for??

A

Weather
Gps
Environmental
Communication

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11
Q

A satellite in orbit has

A

Horizontal velocity
Constant vertical acceleration (due to gravity)
It’s a projectile

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12
Q

Principle of conservation of energy

A

Energy cannot be made or destroyed
It can only change from one form to another
KINETIC ENERGY LOST = HEAT ENERGY GAINED

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13
Q

Detector of radio waves

A

Aerial and radio telescope

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14
Q

Detector of microwaves

A

Aerial and microwave receiver

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15
Q

Infrared detector

A

Photodiode and infrared telescopes

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16
Q

Visible light detector

A

The human eye and refracting telescopes

17
Q

Ultraviolet

A

Fluorescent materials

18
Q

X-ray

A

Photographic film

19
Q

Gamma rays

A

Photographic film and Geiger counter

20
Q

Why does a rockets acceleration increase as it rises?

A
  • mass of rocket decreases as fuel is used up
    Less weight = greater Fun
  • higher the rocket gets - less air resistance
  • further rocket gets from Earths surface - lower gravitational field strength
    Less weight = greater Fun
21
Q

Kinetic energy

A

Object that is moving kinetic energy (Ek)

22
Q

Big Bang

A

Explosion
Sent matter hurtling outwards
Universe expanding since away from this point

23
Q

Different forms of energy

A 
Heat 
Sound 
Chemical 
Electrical 
Light 
Kinetic 
Potential
(Joules)
24
Q

Specific heat capacity

A

The energy required to raise the temperature of a 1 kg sample by 1oC

25
Q

Risks of space exploration

A
  • technology goes wrong

- shuttle can burn up on re entry - damage to the thermal protection systems on the wing

Physics Nat 5 (9 decks)

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