Space Exploration Flashcards
Moon
A natural satellite that orbits a planet
Star
Burning ball of gas
Salad system
Contains a central star with planets orbiting around it
Exo-planet
Planet out with our own solar system
Galaxy
A collection of solar systems
Universe
All galaxies collected
Planet
Large spherical object that orbits a central star
Visible light use
Spectroscopes used to analyse light from light producing objects
Indicate gases surrounding them
White light source
Made up of all the colours of the rainbow
CONTINUOUS SPECTRUM
Satellites are used for??
Weather
Gps
Environmental
Communication
A satellite in orbit has
Horizontal velocity
Constant vertical acceleration (due to gravity)
It’s a projectile
Principle of conservation of energy
Energy cannot be made or destroyed
It can only change from one form to another
KINETIC ENERGY LOST = HEAT ENERGY GAINED
Detector of radio waves
Aerial and radio telescope
Detector of microwaves
Aerial and microwave receiver
Infrared detector
Photodiode and infrared telescopes
Visible light detector
The human eye and refracting telescopes
Ultraviolet
Fluorescent materials
X-ray
Photographic film
Gamma rays
Photographic film and Geiger counter
Why does a rockets acceleration increase as it rises?
- 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
Kinetic energy
Object that is moving kinetic energy (Ek)
Big Bang
Explosion
Sent matter hurtling outwards
Universe expanding since away from this point
Different forms of energy
Heat Sound Chemical Electrical Light Kinetic Potential (Joules)
Specific heat capacity
The energy required to raise the temperature of a 1 kg sample by 1oC
Risks of space exploration
- technology goes wrong
- shuttle can burn up on re entry - damage to the thermal protection systems on the wing
