Uranus: the Seventh Planet

Questions

1. Details How long is one year on Uranus?

   88 Earth days 225 Earth days 365 days about 84 Earth years
2. Details What is Uranus known for?

   thick clouds that trap heat a tilt that makes it spin on its side the fastest winds in the solar system liquid water on its surface
3. Cause and effect Why does Uranus have a tilt that makes it spin on its side?

   It is the right distance from the Sun for water to stay liquid, not frozen or boiled away. Winds on Jupiter are so strong that one storm has lasted for hundreds of years. Its air is mostly carbon dioxide, which holds heat in like a blanket. Scientists think a huge object crashed into it long ago and knocked it over.
4. Vocabulary What does "tilt" mean in the passage?

   a lean to one side a large planet made mostly of icy materials like water, ammonia and methane the path a planet takes around the Sun flat bands of ice and rock that circle a planet
5. Details Where is Uranus in order from the Sun?

   the sixth planet the seventh planet the fourth planet the fifth planet
6. Main idea What is this passage mostly about?

   how rockets are built what the planet Uranus is like what the planet Earth is like what the planet Mercury is like
7. Inference Based on the passage, why is a year on Uranus longer than a year on Earth?

   It is closer to the Sun, so its orbit is shorter. It is farther from the Sun, so its orbit is longer. It spins faster. It is hotter than Earth.
8. Evidence Which sentence best explains why Uranus has a tilt that makes it spin on its side?

   One year on Uranus, the time it takes to travel once around the Sun, lasts about 84 Earth years. Because of its tilt, each pole of Uranus gets about 42 years of sunlight and then 42 years of darkness. The temperature on Uranus is about minus 195 degrees Celsius at the cloud tops. Scientists think a huge object crashed into it long ago and knocked it over.

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