Part of the radio and microwave spectrum used for communications.
1 of 10
Base load
Constant amount of electricity generated by power stations.
2 of 10
Beta radiation
Beta particles that are high-energy electrons created in and emitted from unstable nuclei.
3 of 10
Big Bang theory
The theory that the universe was created in a massive explosion (the Big Bang) and that the universe has been expanding ever since.
4 of 10
Biofuel
Fuel made from animal or plant products.
5 of 10
Black dwarf
A star that has faded out and gone cold.
6 of 10
Black hole
An object in space that has so much mass that nothing, not even light, can escape from its gravitational field.
7 of 10
Blue-shift
Decrease in the wavelength of electromagnetic waves emitted by a star or galaxy due to its motion towards us. The faster the speed of the star or galaxy, the greater the blue-shift is.
8 of 10
Boundary
Line along which two substances meet.
9 of 10
Braking distance
Th distance travelled by a vehicle during the time its brakes act.
10 of 10
Other cards in this set
Card 2
Front
Base load
Back
Constant amount of electricity generated by power stations.
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