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126 Cards in this Set
- Front
- Back
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Atmosphere |
The layers of gases surrounding the planet |
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Biosphere |
All living things on earth |
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Carbon cycle |
The process by which carbon is recycled through the soil, water, living things and the atmosphere |
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Denitrifying bacteria |
Bacteria that convert nitrates back into gaseous nitrogen (N2), which is then released back into the atmosphere. |
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Fossil Fuels |
Fuels that contain the carbon of plants and animals that died and were preserved millions of years ago. |
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Hydrosphere |
All the liquid water on the Earth's surface. |
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Leguminous Plants |
Plants that can take nitrogen from the air and fix it in their tissues. |
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Lithosphere |
The land masses on Earth. |
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Nitrogen Cycle |
The process by which nitrogen cycles between the living and non-living environments. |
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Nitrogen-fixing bacteria |
Bacteria that absorb nitrogen from the air and convert it into ammonia and then into nitrates. |
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Sustainable ecosystems |
Ecosystems that are diverse and provide for the needs of the organisms that live there. |
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Absolute Magnitude |
A measure of how bright a star would appear if it was 10 parsecs from Earth. |
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Absolute Magnitude |
A measure of how bright a star would appear if it was 10 parsecs from Earth. |
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Apparent Magnitude |
A measure of the brightness of a star as it appears to an observer on Earth. |
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Absolute Magnitude |
A measure of how bright a star would appear if it was 10 parsecs from Earth. |
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Apparent Magnitude |
A measure of the brightness of a star as it appears to an observer on Earth. |
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Blue Supergiants |
Stars that are ten or more times more massive than the sun. |
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Absolute Magnitude |
A measure of how bright a star would appear if it was 10 parsecs from Earth. |
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Apparent Magnitude |
A measure of the brightness of a star as it appears to an observer on Earth. |
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Blue Supergiants |
Stars that are ten or more times more massive than the sun. |
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Binary Star System |
When two stars orbit a common centre of mass. |
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Absolute Magnitude |
A measure of how bright a star would appear if it was 10 parsecs from Earth. |
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Apparent Magnitude |
A measure of the brightness of a star as it appears to an observer on Earth. |
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Blue Supergiants |
Stars that are ten or more times more massive than the sun. |
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Binary Star System |
When two stars orbit a common centre of mass. |
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Black dwarf |
Cold dark remains of a white dwarf |
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Absolute Magnitude |
A measure of how bright a star would appear if it was 10 parsecs from Earth. |
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Apparent Magnitude |
A measure of the brightness of a star as it appears to an observer on Earth. |
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Blue Supergiants |
Stars that are ten or more times more massive than the sun. |
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Binary Star System |
When two stars orbit a common centre of mass. |
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Black dwarf |
Cold dark remains of a white dwarf |
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Black hole |
Also known as a singularity, a collapsed star so massive that not even light can escape from its gravitational field |
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Absolute Magnitude |
A measure of how bright a star would appear if it was 10 parsecs from Earth. |
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Apparent Magnitude |
A measure of the brightness of a star as it appears to an observer on Earth. |
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Blue Supergiants |
Stars that are ten or more times more massive than the sun. |
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Binary Star System |
When two stars orbit a common centre of mass. |
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Black dwarf |
Cold dark remains of a white dwarf |
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Black hole |
Also known as a singularity, a collapsed star so massive that not even light can escape from its gravitational field |
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Density |
Mass -------- Volume |
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Electromagnetic spectrum |
Different types of electromagnetic radiation ranging from radio waves to gamma rays. |
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Electromagnetic spectrum |
Different types of electromagnetic radiation ranging from radio waves to gamma rays. |
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Gamma rays |
Very high-energy electromagnetic rays |
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Electromagnetic spectrum |
Different types of electromagnetic radiation ranging from radio waves to gamma rays. |
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Gamma rays |
Very high-energy electromagnetic rays |
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Gravitational lensing |
The bending of light rays due to the distortion of space caused by a massive object like a black hole. |
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Electromagnetic spectrum |
Different types of electromagnetic radiation ranging from radio waves to gamma rays. |
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Gamma rays |
Very high-energy electromagnetic rays |
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Gravitational lensing |
The bending of light rays due to the distortion of space caused by a massive object like a black hole. |
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Gravity |
The force that causes all matter to gather together. |
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Electromagnetic spectrum |
Different types of electromagnetic radiation ranging from radio waves to gamma rays. |
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Gamma rays |
Very high-energy electromagnetic rays |
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Gravitational lensing |
The bending of light rays due to the distortion of space caused by a massive object like a black hole. |
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Gravity |
The force that causes all matter to gather together. |
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Isotope |
Atoms with the same number of protons but different numbers of neutrons. |
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Electromagnetic spectrum |
Different types of electromagnetic radiation ranging from radio waves to gamma rays. |
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Gamma rays |
Very high-energy electromagnetic rays |
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Gravitational lensing |
The bending of light rays due to the distortion of space caused by a massive object like a black hole. |
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Gravity |
The force that causes all matter to gather together. |
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Isotope |
Atoms with the same number of protons but different numbers of neutrons. |
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Light year |
The distance light travels in a year, approximately 9,500,000,000,000 |
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Electromagnetic spectrum |
Different types of electromagnetic radiation ranging from radio waves to gamma rays. |
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Gamma rays |
Very high-energy electromagnetic rays |
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Gravitational lensing |
The bending of light rays due to the distortion of space caused by a massive object like a black hole. |
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Gravity |
The force that causes all matter to gather together. |
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Isotope |
Atoms with the same number of protons but different numbers of neutrons. |
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Light year |
The distance light travels in a year, approximately 9,500,000,000,000 |
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Magnitude |
A measure of the brightness of a star |
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Electromagnetic spectrum |
Different types of electromagnetic radiation ranging from radio waves to gamma rays. |
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Gamma rays |
Very high-energy electromagnetic rays |
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Gravitational lensing |
The bending of light rays due to the distortion of space caused by a massive object like a black hole. |
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Gravity |
The force that causes all matter to gather together. |
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Isotope |
Atoms with the same number of protons but different numbers of neutrons. |
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Light year |
The distance light travels in a year, approximately 9,500,000,000,000 |
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Magnitude |
A measure of the brightness of a star |
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Main sequence |
A group of stars lying on a line running from the top left to the bottom right of the H-R diagram. |
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Electromagnetic spectrum |
Different types of electromagnetic radiation ranging from radio waves to gamma rays. |
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Gamma rays |
Very high-energy electromagnetic rays |
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Gravitational lensing |
The bending of light rays due to the distortion of space caused by a massive object like a black hole. |
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Gravity |
The force that causes all matter to gather together. |
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Isotope |
Atoms with the same number of protons but different numbers of neutrons. |
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Light year |
The distance light travels in a year, approximately 9,500,000,000,000 |
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Magnitude |
A measure of the brightness of a star |
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Main sequence |
A group of stars lying on a line running from the top left to the bottom right of the H-R diagram. |
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Neutrino |
An almost mass-less, neutral particle released during some nuclear reactions. |
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Electromagnetic spectrum |
Different types of electromagnetic radiation ranging from radio waves to gamma rays. |
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Gamma rays |
Very high-energy electromagnetic rays |
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Gravitational lensing |
The bending of light rays due to the distortion of space caused by a massive object like a black hole. |
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Gravity |
The force that causes all matter to gather together. |
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Isotope |
Atoms with the same number of protons but different numbers of neutrons. |
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Light year |
The distance light travels in a year, approximately 9,500,000,000,000 |
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Magnitude |
A measure of the brightness of a star |
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Main sequence |
A group of stars lying on a line running from the top left to the bottom right of the H-R diagram. |
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Neutrino |
An almost mass-less, neutral particle released during some nuclear reactions. |
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Neutron Star |
Remnant of a supernova, consisting entirely of neutrons |
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Electromagnetic spectrum |
Different types of electromagnetic radiation ranging from radio waves to gamma rays. |
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Nuclear fusion |
Process in which hydrogen is converted i to helium to produce light and heat. |
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Gamma rays |
Very high-energy electromagnetic rays |
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Gravitational lensing |
The bending of light rays due to the distortion of space caused by a massive object like a black hole. |
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Gravity |
The force that causes all matter to gather together. |
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Isotope |
Atoms with the same number of protons but different numbers of neutrons. |
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Light year |
The distance light travels in a year, approximately 9,500,000,000,000 |
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Magnitude |
A measure of the brightness of a star |
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Main sequence |
A group of stars lying on a line running from the top left to the bottom right of the H-R diagram. |
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Neutrino |
An almost mass-less, neutral particle released during some nuclear reactions. |
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Neutron Star |
Remnant of a supernova, consisting entirely of neutrons |
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Parallax |
A technique used to measure the distance to other stars. |
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Parallax |
A technique used to measure the distance to other stars. |
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Parsec |
An astronomical unit of length equal to 3.26 light years. |
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Parallax |
A technique used to measure the distance to other stars. |
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Parsec |
An astronomical unit of length equal to 3.26 light years. |
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Plasma |
A state of matter consisting of positively charged ions and free electrons. |
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Parallax |
A technique used to measure the distance to other stars. |
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Parsec |
An astronomical unit of length equal to 3.26 light years. |
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Plasma |
A state of matter consisting of positively charged ions and free electrons. |
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Positron |
Positively charged electron |
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Planetary Nebula |
A cloud of gas produced when a red giant runs out of fuel. |
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Planetary Nebula |
A cloud of gas produced when a red giant runs out of fuel. |
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Radiation pressure |
The force produced by radiation from a hot object |
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Red giant |
A star produced when the core of a sun sized star runs out of hydrogen. |
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Spectral class |
A classification system for stars based on their colour. |
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Spectral class |
A classification system for stars based on their colour. |
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Stellar parallax |
The apparent change in the position of a star throughout the year due to the Earth's motion around the sun |
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Supermassive Black Hole |
A black hole millions or billions of times the mass of our sun found at the centre of a galaxy. |
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Supernova |
A giant explosion that occurs when a star many times larger than our sun runs out of nuclear fuel |
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Supernova |
A giant explosion that occurs when a star many times larger than our sun runs out of nuclear fuel |
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White dwarf |
Hot, dense star that is the remains of a red giant |
