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Science Term 4 Defintions

Type the corresponding word for each of the definitions
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Jacko1515
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Last updated: November 19, 2024
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First submittedNovember 19, 2024
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Average score57.1%
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All of space, time, matter, and energy, including galaxies, stars, and planets.
Universe
The star at the center of our solar system, providing heat and light.
Sun
A massive ball of gas undergoing nuclear fusion, emitting light and heat.
Star
A system of billions of stars, gas, and dust bound by gravity.
Galaxy
A celestial body orbiting a star, large enough to be spherical and clear its orbit.
Planet
The curved path of one object around another due to gravity.
Orbit
A star and all the objects gravitationally bound to it, including planets.
Solar System
A natural satellite orbiting a planet.
Moon
A star's brightness as it would appear from a standard distance.
Absolute magnitude
The theory that the universe began from an extremely dense and hot state and has been expanding.
Big Bang Theory
The faint radiation left over from the Big Bang.
Cosmic microwave background radiation
The stretching of light waves, making them appear redder, indicating an object is moving away.
Red Shift
The compression of light waves, making them appear bluer, indicating an object is moving closer.
Blue Shift
The observation that galaxies move away faster as their distance increases.
Hubble’s Law
The regions of Earth that support life.
Biosphere
The solid, rocky part of Earth, including the crust, mantle, and core.
Geosphere
All the water on Earth's surface, underground, and in the atmosphere.
Hydrosphere
The layer of gases surrounding Earth.
Atmosphere
Long-term shifts in temperature, weather patterns, and ecosystems.
Climate change
The trapping of heat in Earth's atmosphere by greenhouse gases.
Greenhouse effect
The variety of life in a particular habitat or the entire planet.
Biodiversity
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