Unit 4 Astronomy:the science of the stars

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Unit 4 Astronomythe science of the stars

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How many planets are there in the Solar System?
How much do you know about the universe?
What are they?
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Mars
The Planet is named after the Roman god of war.
It's distinctive rust color is red .Its surface
features many mountains, canyons and even polar
ice caps that look a lot like those here on
Earth. We are doing some research to find out
whether there is life forms on it.
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Mercury

Since it has no protective atmosphere, the
temperature on the surface ranges from extremely
hot on the side facing the Sun to extremely cold
on the side that faces away from the Sun. It is
the closest planet to the Sun.
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Venus
It is named after the Roman goddess of love and
beauty,but the surface is a very unpleasant place
featuring very high temperatures, winds that blow
hundreds of miles per hour and an atmosphere of
sulfuric acid.
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Jupiter
It has at least sixty-one moons and features the
Great Red Spot, which is a huge "storm" that has
been observed from here on Earth for over three
hundred years. It is the largest planet in our
solar system.
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Saturn
It has a fascinating system of rings .It has so
many moons that it is like a miniature solar
system.
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Uranus
It is one of the giant gas planets in the solar
system. It has a very faint ring system that we
didn't know existed until the planet was visited
by the Voyager spacecraft.
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Neptune
It was the last stop the Voyager mission made
before if left our solar system. It has winds
that blow hundreds of miles per hour and a moon
that features "geysers" of nitrogen that erupt
and leave dark marks on the surface.
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Pluto
Pluto is so far away that the Sun is just a dim
point of light that looks a lot like any other
star. It is the smallest and most mysterious
planet in our solar system. It has one moon,
Charon, that is almost as big as the planet
itself.
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COUNTRY NAME DATE FLIGHT DURATION
12 hours
Yuri Gagarin
USSR
1961
Alan Shepard
USA
15 minutes
1961
China
Yang Liwei
2003
21 hours
Shenzhou V
spacecraft
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To study a subject scientifically step by step

• try to be objective
• set out your idea to be tested
• design an experiment to test the idea
• analyse the results
• draw a conclusion

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Skills needed to be a scientist

• accuracy
• a logical approach
• thorough writing of the experiment so some on
  else could redo the experiment from your notes
• be able to draw conclusions from the evidence
  and not impose conclusions on the data