T2: Visible Light and the Solar System

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  • Created by: Katie
  • Created on: 28-01-13 17:47
What is the order of the planets (with smallest distance from sun first)?
Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune
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Pytoplemy
He used measurments of objects in the sky to explain that the sun, the moon and the planets moved in orbits. His iseda put the EARTH at the CENTRE OF EVERYTHING.
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Copernicus
He thought Pytoplemy's measurments fitted a different model. A model with the SUN at the CENTRE OF THE SOLAR SYSTEM.
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Who didn't like Copernicus idea?
The Church
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Galileo Gallei
He agreed with Copernicicus. He showed this was true by observing the planets using a telescope.It showed they orbited the sun and not earth.
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What is the Geocentric model and who supports it?
It showed planets moved in small circles as they orbited te Earth It supports Pytoplemy.
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What is the Heliocentric model and who supports it?
This showed the sun was in the centre and supports Copernicus and Galileo.
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What was the evidence for the heliocentric model?
That the 4 moons orbit Jupiter, it says everything orbits the earth but it must be wrong as the 4 moons only orbited Jupiter and nothing else.
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What was evidence that the heliocentric model could be wrong?
There are no fixed stars, missing Neptune and Uranus and they don't move in perfect circles, they move in an eplise.
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What 3 ways do we observe the universe?
1. With our eyes 2. With telescopes 3. Photography
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What does the angle of incidence equal?
The angle of reflection
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What is the difference between a real and virtual image?
REAL IMAGE: Is the images formed where the light rays are focused
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What is amplitude?
Is the maximum vertical disturbance caused by a wave
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What is wavelength?
is the distance between corresponding points on two successive disturbances
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What is frequency?
is the number of waves produced by a source per second
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What are transverse waves?
Particles move up and down and are at 90 degrees to the direction of travel
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What are longitudinal waves?
move left to right and parallel to wave direction
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What type of waves are transverse?
radio waves, light waves, seismic S waves, water waves
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What type of waves are longitudinal?
Shock waves, Seismic P waves and sound waves
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What is a similarity between the two types of waves?
Both waves carry energy
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What are 3 differences between the two types of waves?
1. Travel at different speeds 2. Different patterns 3. Longitudinal need a medium to go through
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What is refraction?
Occurs when a light passes through a boundary of two different materials. MORE DENSE MEDIUM= speed decreases + bends towards the normal line LESS DENSE MEDIUM= speed increases + bends away from the normal line
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What happens to the image in a curved mirror?
The image will be upside down because if the rays are continued they will be in the opoisite place to where they started
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Other cards in this set

Card 2

Front

Pytoplemy

Back

He used measurments of objects in the sky to explain that the sun, the moon and the planets moved in orbits. His iseda put the EARTH at the CENTRE OF EVERYTHING.

Card 3

Front

Copernicus

Back

Preview of the front of card 3

Card 4

Front

Who didn't like Copernicus idea?

Back

Preview of the front of card 4

Card 5

Front

Galileo Gallei

Back

Preview of the front of card 5
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