Physics Module 1 Quiz
- Created by: Eloise26
- Created on: 16-04-14 13:01
Other questions in this quiz
2. Where do most earthquakes and volcanoes occur?
- Plate ridges.
- Near the edges of the plates.
- Near the middle of the plates.
- Away from the plates.
3. Briefly describe parallax and how it's used to measure the distance of nearby stars.
- When something appears to move when you look at it from different places. Astronomers take photos of the sky six months apart and then observe the apparent movement. The bigger the movement the closer the star is.
- When something appears to move when you look at it from different places. Astronomers look at the sky alternating blinking and see which is further by observing the difference.
- When something appears to move when you look at it from different places. So far scientist haven't found a way to put this into use for nearby stars.
- When something appears to move when you look at it from different places. The bigger the movement the further away the star.
4. Explain why we see stars and galaxies as they were in the past.
- We don't, it a common misconception in science. What we are seeing is the same time.
- The planet move so fast that it's hard for the light to keep up.
- Light travels at a certain speed, so the further away something is in space, the longer the light takes to get to us.
- Space time and Earth time are different. One earth year=100 space years.
5. Briefly explain Wegener's theory of continental drift.
- About 300 million years ago there had been ONE continent (Pangaea) and over time it broke up into smaller chunks and spread out.
- About 300 million years ago there had been ONE continent (Panantas) and over time it melted into the ocean and created other islands.
- About 250 million years ago there had been TWO continents (Pangaea and Samantes) and over time it's spread out.
- About 1 million years ago there had been ONE continent (Pangaea) and one day it combusted and broke off into mini islands.
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