Flashcards
P1 - topic one
Flashcards do conjunto (8)
- 1what is reflectionThe deflection of a ray of light, when it hits the boundary between 2 different surfaces, for example air and glass as in a mirror
- 2what is refractionthe phenomenon that occurs when a wave passes from one medium into another, causing a change in speed and direction
- 3How does a reflecting telescope work?light from a distant object strikes the large parabolic mirror at the end. It is then reflected to a small secondary flat mirror. Finally, the light is reflected onto an eyepiece through which thr image is seen.
- 4when was Uranus discovered?in 1781, viewed through a telescope
- 5what happens if a converging lens is held up to the light?an upside down image of it is seen if a piece of paper is held on the other side
- 6describe a light ray coming from air to waterEnter text here...
- 7what is a wave?a disturbanceim a medium or in space that is able to carry energy
- 8what happens to photography during the night?since light levels are low, the camera must be open for a long time to let enough light in. therefore due to the rotation of the earth stars will appear as streaks rather than pin points
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- FlashCards sobre P1 - topic one, criado por trinity.kelly em 16-12-2016.
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- trinity.kelly
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