star life cycles, aliens, telescopes
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Black hole | Core of a red super- giant that has collapsed.Formed if the remaining core has a mass of 3-4 times mass of our sun
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| Cosmic microwave background radiation (CMB) | Microwave radiation that is all over the sky. Originating from the Big Bang. Supports Big Bang theory
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| Doppler effect | Change in pitch of a sound coming from a moving source.
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| Extraterrestrials | Beings that live on other planets apart from the Earth
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| Fusion reaction | When two atoms join together to release energy. In the sun 2 hydrogen atoms fuse to make an Helium atom
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| Galaxy | A group of millions of stars held together by gravity
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| Lander | A space vehicle that lands on a moon or a planet
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| main sequence star | A star during the main part of its life cycle. It is using hydrogen as its fuel for fusion like our Sun
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| Milky way | The name of our galaxy
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| Nebula | A cloud of gas in space. This is the start of a star's life cycle.
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| neutron star | Core of a red super giant that has collapsed.
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| orbit | The path a planet takes around a star or the path a satellite takes around a moon
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| protostar | A cloud of gas drawn together by gravity. It has not yet got hot enough to make its own energy by fusion
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| red giant | A star that has used up all the hyrogen in its core and is now fusing helium atoms together for its fuel. Bigger than a normal star.
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| red super giant | A star that has used up all the hyrogen in its core and is now fusing helium atoms together for its fuel. Bigger than a normal star. It started as a star of much bigger mass than our sun.
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| red shift | Waves that are emitted by a source moving away from the observer. The frequency appears to be lower than that of the stationary source and the wavelength longer.
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| rover | A space vehicle that can move around on a planet or moon.
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| Search for Extraterrestrial Intelligence (SETI) | Looking for intelligent life beyond by trying to detect radio signals from them.
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| Solar System | An area of space where objects are influenced by the Sun's gravity
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| Space Probe | A vehicle that can be put into orbit around a planet or moon or can be parachuted down through its atmosphere.
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| star | A large ball of gas that produces heat and light from fusion reactions
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| Steady state theory | The theory that the Universe is expanding but new matter is continuously being created so the Universe will always appear the same.
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| supernova | An explosion produce when the core of a red super giant collapses.
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| Universe | All the stars, galaxies and space itself
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| White dwarf | A very dense star that is not very bright. A red giant turns into a white dwarf.
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| Big Bang Theory | The theory that says the Universe started from a tiny point with huge energy and has been expanding ever since.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Susan E Casey
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