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Earth Science 11 Learning Guide – Unit 2
Name: _______________
2-1 The sun
1. Describe the sun, temperature, composition, lifespan, etc
2. Name and describe the three layers of the sun
3. What are sunspots? Give some information about them.
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2-2 Solar System: Features and Origins – work must be shown
1. Calculate the period of Mars if it is 1.45 AU from the sun.
2. What is the orbital radius (in AU) of Neptune if its period is 163.78 Earth
years?
3. Calculate the force of gravity between the Earth (mass = 5.98 x 1024 kg)
and the sun (mass = 1.99 x 1030 kg) if the Earth – Sun distance is 1.5 x
1011 m.
4. If the distance between Earth and the sun were doubled what would be
the force of gravity between them, use your answer from #3 to find the
answer to this question.
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5. What is the orbital period of a comet from the Kuiper belt if it is 45 AU
away.
6. Close study of long period comets show them to be from the Oort Cloud.
Compare how fast those comets would be moving while in the cloud and
while moving near the sun with the speed of Earth’s orbit.
2-3 Terrestrials
1. Name the terrestrial plants. What ways are they alike?
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2. Account for the difference in temperature of the two sides of Mercury.
3. Compare Venus and Earth
4. What two planets are often called the morning star and the evening star?
Why are they called this?
5. Compare Mars to Earth.
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6. What is the evidence of water on Mars?
7. Why are meteor impact craters rare on Earth?
2-4 Jovian Planets
1. How are the Jovian planets different from the Terrestrial planets? Discuss
the characteristics of the Jovian planets.
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2. How is Jupiter different from all other planets? What is the Red Spot?
3. Compare Saturn and Jupiter? Of what are Saturn’s rings composed?
4. Describe Uranus mentioning tilt of the axis, magnetic field and
composition.
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5. Describe Neptune. Why is it blue?
6. Which of the planets have rings?
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7. What is a satellite? Why are some of the moons of Jupiter called Galilean
Moons?
8. Name and describe the parts of a comet.
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