Flashcards

Science

ellie.ellis2 science E-b Inglês 13 flashcards

Flashcards do conjunto (13)

1Q. what is a sound wave?A. Longitudinal.
2Q. why was the big bang theory the accepted theory for the evolution of the universe?A. 2 pieces of evidence - red shift & CMDR support it, whilst the steady state theory is supported only by red shift
3Q. what is geothermal energyA. pumping cold water into hot volcanic areas to turn them into steam to be driven to the earths surface
4Q. Name 3 fuels that can be used to drive steam turnbinesA. Fossil fuels, Uranium, bio-fuels
5Q. 3 properties of the image produced in a mirrorA. inverted, virtual and upright
6Q. What happens to wasted energyA. It is transferred into the surroundings
7Q. when a source of waves (galaxy) is moving away from you, what happens to A. the wave length B. the frequencyA. increases
B. decreases
8Q. what is a U-valueA. a measure of how effective a material is as an insulator.
9Q. what is the big bangA. when the universe started as a tiny point of concentrated energy, universe expanded and continued to expand. gravity causes matter to clump together.
10Q. what is an echo?A. a reflection of a sound
11Q. what is the loudness of a sound dependent on?A. amplitude
12Q. what is the pitch of a sound depend onA. frequency
13Q. what factors affect the rate are which objects transfer energyA. A surface area, volume, the material, the object its made from

Descrição: E-b science FlashCards sobre Science , criado por ellie.ellis2 em 29-03-2015.
Criado por: ellie.ellis2
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