Space Flashcards
State 3 benefits or satellites
GPS, Weatherforcasting, Communication, Security, Space Exploration or Scientific Discovery
Definition of a planet.
-Orbits a sun
-Has its own gravity to force it into a spherical shape
- Big enough that gravity cleared away other objects of similar size near its orbit
What is the name given to a planet that exists outside our solar system?
Exoplanet
True or False?
Our solar system has 8 planets
True
If there is a change in state, is there also a change in temperature ?
No
What is a light year and why is it used?
A light year is the distance light travels in 1 year and they’re used as the distances in space are so vast.
What colour of star is the hottest and why?
A bluish star is the hottest as blue has a shorter wavelength meaning there are more waves ie. More heat
What are the two most common elements found in our universe?
Hydrogen & Helium
What are the two types of Spectra?
And what is used to analyse them?
-Continuous Emission Spectrum
-Line Emission Spectrum
- A spectrascope
What is the current estimate for the age of the universe?
13.8 billion years old
Name two things that produce the continuous Emission Spectrum and what acronym is used to identify the order of the colours present in it?
-Light Bulb
-The Sun
- R.O.Y.G.B.I.V
What speed does the continuous Emission Spectrum travel at ?
3×10⁸ms‐¹
What is used to describe the change in state from a liquid to a gas or a gas to a liquid?
Vaporisation
State 2 challenges of Space Travel.
- Maintaining energy supplies to support life systems in a spacecraft
-Maneouvering a spacecraft is a 0 friction environment
State the name used to describe the change in state from a liquid to a solid or vice versa.
Fusion
State 3 properties of a geostationary satellite.
- 24hr Period
- Orbits the same point above earth
-Is 36,000km above the surface of earth
True or False?
The higher the altitude the shorter the period?
False
Describe the universe?
All of Space and time and their contents
What does a curved reflector do?
It reflects more or a transmitted signal onto the receiver. Used to detect weaker signals.
State 3 things used to observe our universe.
-Space Telescopes
-Terrestrial Telescopes ( on earth)
-Space Probes
