Apologia Astronomy lessons 8 and 9
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Know the difference between: meteoroids, meteors and meteorites. | Meteoroid-small rocks and dirt floating in space; meteors-meteoroids that hit Earth's atmosphere and completely burn up; meteorites--meteoroids that hit Earth's atmosphere but don't completely burn up (part hits Earth)
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| Know the difference between comet tails that are blue and yellow. | Blue tail--made of steam
Yellow tail--made of dust particles
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| Know the difference between short-period comets and long-period comets. | Short-period comets-orbits the Sun every 200 years or less; long-period comets-orbits the Sun every 201 years or longer
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| Comets do not orbit in a circle. What shape is their orbit? | long and elliptical
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| What is the Asteroid Belt? | An area between Mars and Jupiter where large rocks are located
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| Where on Earth have lots of meteorites been found (more than 10,000)? | Antarctica
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| What is the center of a comet called (it is made up of ice and a large rock)? | nucleus
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| Comets are named for the Greek word kometes which means what? | head of hair
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| What is the difference between asteroids and meteoroids? | Size--asteroids are larger than meteoroids
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| Name the Galilean moons in order by size, largest to smallest. | Ganymede, Callisto, Io, Europa
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| What is the Great Red Spot on Jupiter? | A giant hurricane-like storm that travels around Jupiter
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| How long has the Great Red Spot been raging? | more than 300 years
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| How long is a year on Jupiter? | 12 Earth years
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| How long is a day on Jupiter? | 10 Earth hours
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| What is the name of the biggest moon in our Solar System and which planet is it revolving around? | Ganymede is the biggest moon in our Solar System and it is one of Jupiter's moons.
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| Is Jupiter a terrestrial or gaseous planet? | gaseous
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| Jupiter was named after the Roman god of what? | rain, thunder and lightning
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| The four largest moons of Jupiter are called the Galilean moons. Why? | Because they were discovered by Galileo.
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| What are the two main gases found on Jupiter? | hydrogen and helium
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| Explain gravity assist. | It is when NASA scientists use the gravity of planets to help propel or send spacecraft into outer space.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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