Threats to Earth part1 and 2

Threats to Earth part1 and 2 - Threats to Earth P2g part 1...

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Threats to Earth P2g part 1 & 2
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Objectives In this lesson we should learn: about the properties of asteroids how asteroids have affected Earth in the past
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Outcomes Foundation Paper You should now be able to. . State that large asteroids have collided with the Earth in the past and describe some of the consequences and evidence of such collisions State that asteroids are rocks and describe that asteroids are left over from the formation of the Solar System and where they can be found. Higher paper Explain why the asteroid belt is between Mars and Jupiter: the large gravity of Jupiter disrupts the formation of a planet
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The asteroid Gaspra, found in the Asteroid Belt between Mars & Jupiter
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Asteroid Ida with it’s moon Dactyl
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Asteroids Asteroids are large rocks left over from the formation of the Solar System They are mostly between the orbits of Mars and Jupiter Asteroids (large rocks) have collided with the Earth in the past causing: - craters, - ejection of hot rocks, - widespread fires, - sunlight blocked by dust, - climate change, - species extinction
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Collisions? The evidence for past collision on Earth includes: - craters - layers of unusual elements in rocks - sudden changes of fossil numbers between adjacent layers of rock.
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Asteroids are small ______________ which orbit the ______________, mainly between ______________ and ______________. Occasionally, a long time ago,
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Threats to Earth part1 and 2 - Threats to Earth P2g part 1...

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