Bonus info + Need to know for the exam

    Cards (38)

    • What is the description of the Moon?
      An object that orbits a planet
    • A planets description
      An object that orbits a star.
    • What's the Sun's description
      A star that produces an enormous amount of heat and light energy.
    • A stars definition 

      A ball of extremely hot gas produced by a nuclear fusion
    • What's the solar system?
      A system that has the sun and eight planets which orbit it
      • What's the solar system?
      A system that has the sun and eight planets which orbit it
    • What's a Exoplanet?

      A planet that is apart from the solar system.
    • Definition of a galaxy
      An intricate system of stars, dust, and gas.
    • What is the universe
      The whole of space, and everything overrall.
    • How is the term 'light year' used, and it's overall meaning.

      The distance it takes light to travel in a year.
    • What does the Earth classify as?
      A planet
    • What's the Earth's natural satellite.
      The moon.
    • What are the stages of a high mass stars life cycle?
      1. Nebula (Gas cloud)
      2. Low mass star
      3. Red giant
      4. a Planetary Nebula
      5. White Dwarf
      6. Black dwarf
      7. Nebula (Gas cloud)
      8. Massive star
      9. Super red giant
      10. Supernova (explosion)
      11. Black Hole, or a Pulsar or A Neutron star
    • What's a black hole?
      A black hole is a an object that is so compact that its gravitational force is so strong
    • The formulae to calculate how much light travels
      300 000 000 x 365.25 x 24 x 60 x 60 x _____ =
    • Explain how day and night works
      Day - When the planet faces the sun.
      Night - When the planet is facing away from the sun.
    • Explain a month
      A month is the amount of time it takes for the moon to orbit the Earth once. (27.5 but they had to make it according to the calendar thus 30 or 31 days, apart from february 28 days)
    • Explain a year
      The time it takes a planet to orbit the sun once.
    • What's the big bang theory?
      The theory of how the universe came around from expanding from a miniscule ball (that's still expanding), and overall evolution.
    • What's Red-shift?

      The galaxies getting further away from us stretched their light to a longer wavelength aka red-shifted.
    • What does a refractor telescope use?
      It uses a curved lens at one end to concentrate on the light then the second lens aka the eyepiece magnifies what's visible in the lens (aka the image).
    • What is a refractor telescope used to view?
      Planets, moons, and stars.
    • If the telescope had a greater diameter lens what would the main difference be in the image that being viewed?

      It's be a brighter object.
    • To detect signals why are different types of telescopes used?
      Because different telescopes are better at determining other kinds of wavelengths of light.
    • What are the pros of using a space telescope vs a Earth based telescope?
      They aren't affected by the atmosphere/weather, you use a whole 24 hours of a day, you're able to use all fo the light spectrum.
    • 1.1 How does the solar systems movement relate to the Sun's gravitational forces?
      The Sun's gravity pulls the planets that orbit it to the centre of the solar system.
    • 1.2 Explain a day using the relative motion of the Earth and the Sun.
      It takes the Earth 24 hours to rotate once around its axis.
    • 1.3 Explain a month using the relative motion of the Earth and the
      Moon.
      A month is how long it takes the moon to orbit the Earth, which takes 27.5 days, but they lengthen them to fit the calendar.
    • 1.4 Explain a year using the relative motion of the Earth and the Sun.
      It takes the Earth 365.25 days to orbit the Sun, tis a year.
    • 1.5 Explain how the seasons are created and how this is affected by
      the Sun’s path through the sky.
      The seasons are due to the Earth's tilted axis causing the seasons,
      • When the North pole tilts towards the Sun it's summer in the Northern hemisphere. (when the Earth's axis points towards the sun)
      • When the South pole tilts towards the sun it's winter in the Northern hemisphere. (when the Earth's axis points away the sun)
    • 1.6 State what a light year is and where it is used.
      A light year is how much light travels in one Earth year.
    • 1.7 Describe the life cycle of a star
      A star (e.g the Sun), will gradually cool down and eventually stop shining. But before it stops it'll go through the Planetary nebula phase and White dwarf phase. Once it stops glowing it becomes a Black dwarf which may implode a supernova combustion.
    • 1.8 Describe what black holes and galaxies are.
      A black hole is an astronomical object that has such a powerful gravitational pull that nothing, not even light can escape it's grasp.
    • 1.9 List a range of objects found in the Universe in order of their
      relative sizes.
      1. Universe
      2. Galaxy
      3. Solar system
      4. Star
      5. Planet/Earth
      6. Moon
      7. Asteroid
    • 1.10 What is the term 'Red-shift' and how's it used?
      When an object is further away the wavelength of light waves from the object is stretched and the light is 'shifted' closer to the red end of the electromagnetic spectrum
    • 1.11 Describe the ‘big bang’ theory
      The big bang theory is the theory of how the universe began, the concept is that it was just an individual point that kept stretching, and (still is) expanding to get as large as it is now.
    • 1.11 The evidence for the Big bang theory.
      • The measured abundances of elements
      • The observed expansion of space
      • The discovery of the cosmic microwave background (CMB)
    • 1.12 Describe a variety of methods/devices used to make observations
      of the Universe and the objects within it.
      Satellites and telescopes.
      • Earth based telescopes: Are easy to construct and accessible, but are weather and atmosphere dependent.
      • Telescopes in orbit: Are able to observe more and clearer, but are expensive to place in orbit and to repair.