P1- The Earth in the universe OCR 21st century

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Other than planets, name 3 things that orbit the sun.
Dwarf planet, comets and dust.
1 of 9
What is the source of the suns energy?
Hydrodren and helium.
2 of 9
What is a light year?
How long it takes for light to travel in a year.
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What can the colour of a star determine?
The surface temperature of the star.
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What is the red shift?
When the wavelength of a galaxy's light changes , becomes redder.
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What is the supercotinent that Wegener believed in?
Pangea
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What was the belief about the continents before Wegener?
Land bridges connected the continents
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What are the 4 layers of the earth?
The inner core, outter core, mantle and crust
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What is the formula for wave speed, frequency and wavelength?
Wave speed = Frequency x Wavelength
9 of 9

Other cards in this set

Card 2

Front

What is the source of the suns energy?

Back

Hydrodren and helium.

Card 3

Front

What is a light year?

Back

Preview of the front of card 3

Card 4

Front

What can the colour of a star determine?

Back

Preview of the front of card 4

Card 5

Front

What is the red shift?

Back

Preview of the front of card 5
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