5 Chapter 17 Earth in Space
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| Planets travel in orbits around the ______? | sun
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| One whole spin of an object on its axis is called ______? | rotation
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| When one part of Earth faces toward the Sun, it is ______? | daytime
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| The amount of light energy an area receives causes its climate and _____? | seasons
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| the sun, its nine planets, moons, asteroids, and comets | solar system
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| one full orbit around the sun | revolution
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| an imaginary center line | axis
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| one whole spin of an object on its axis | rotation
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| Earth's elliptical orbit lasts how many days? | 365
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| The Earth's tilt causes the earth to have ______? | seasons
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| Light from the Sun transfers energy to ______? | earth
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| What is the force that keeps all the planet in their orbits? | gravity
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| Planets closest to the sun travel the (fastest or slowest) in their orbits? | fastest
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| Which is the largest planet in our solar system? | Jupiter
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| Do space probes have astronauts aboard them? | no
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| a gas giant; the largest planet | Jupiter
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| a deep blue gas planet that gives off more energy than it receives from the sun | Neptune
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| a rocky planet covered by red, dusty soil | Mars
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| a planet with a thick layer of hot clouds covering a rocky surface | Venus
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| the smallest & coldest planet | pluto
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| the least dense of all the planets | Saturn
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| the planet that is one Astronomical Unit from the sun | Earth
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| the blue-green gas giant with an axis tipped farther than any other planet | Uranus
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| Comets are (smaller or larger) than dwarf planets? | smaller
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| Asteroids can be hundreds of kilometers wide or as small as a pebble. (true or false) | true
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| Shooting stars are actually _____? | meteors
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| Most meteors do what before they hit Earth's surface? | burn up
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| a rocky mass up to several hundred kilometers wide that revolves around the sun is called _____? | asteroid
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| Planets travel in orbits around the ______? | sun
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| One whole spin of an object on its axis is called ______? | rotation
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| When one part of Earth faces toward the Sun, it is ______? | daytime
🗑
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| The amount of light energy an area receives causes its climate and _____? | seasons
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| the sun, its nine planets, moons, asteroids, and comets | solar system
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| one full orbit around the sun | revolution
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| an imaginary center line | axis
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| one whole spin of an object on its axis | rotation
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| Earth's elliptical orbit lasts how many days? | 365
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| The Earth's tilt causes the earth to have ______? | seasons
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| Light from the Sun transfers energy to ______? | earth
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| What is the force that keeps all the planet in their orbits? | gravity
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| Planets closest to the sun travel the (fastest or slowest) in their orbits? | fastest
🗑
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| Which is the largest planet in our solar system? | Jupiter
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| Do space probes have astronauts aboard them? | no
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| a gas giant; the largest planet | Jupiter
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| a deep blue gas planet that gives off more energy than it receives from the sun | Neptune
🗑
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| a rocky planet covered by red, dusty soil | Mars
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| a planet with a thick layer of hot clouds covering a rocky surface | Venus
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| the smallest & coldest planet | pluto
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| the least dense of all the planets | Saturn
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| the planet that is one Astronomical Unit from the sun | Earth
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| the blue-green gas giant with an axis tipped farther than any other planet | Uranus
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| Comets are (smaller or larger) than dwarf planets? | smaller
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| Asteroids can be hundreds of kilometers wide or as small as a pebble. (true or false) | true
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| Shooting stars are actually _____? | meteors
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| Most meteors do what before they hit Earth's surface? | burn up
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| a rocky mass up to several hundred kilometers wide that revolves around the sun is called _____? | asteroid
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| a frozen mass of different types of ice and dust that orbits the sun is called_____? | comet
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| (five or several) comets a year may travel into the solar system and circle the sun. | several
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| Most comets are found just before (sunset or sunrise). | sunrise
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| The (coma or nucleus) and tail of a comet form when it gets close enough to the sun to melt the nucleus. | coma
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| Most asteroids orbit the Sun in a region between Mars and Jupiter called the (asteroid or meteorite) belt. | asteroid
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| (The Sun's or Jupiter's) gravity holds most asteroids in the area beyond Mars. | Jupiter's
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| Most (meteors or asteroids) burn up before they hit Earth's surface. | meteors
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| The Moon is a quarter of the Earth's size. (true or false) | true
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| The Moon's surface is smooth and flat? (true or false) | false
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| The phases of the Moon are caused the positions of the Moon & Earth (true or false) | true
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| The _____ is the main cause of the rising and falling of tides? | Moon
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| a moon, rock, or any object that orbits another object | satellite
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| the shapes of the lit side of the Moon that can be seen | Moon phases
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| the daily rise and fall of the oceans on Earth | tide
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| Which side of the moon always faces Earth? | near side
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| Gravity causes Earth's land, water, and atmosphere to bulge slightly (toward or away from) the moon? | toward
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| Does the Moon have an atmosphere of air and water like the Earth's? (yes or no) | no
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| Have some of the craters on the Moon been caused by crashed space vehicles? (yes or no) | no
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| Does the moon make it's own light? (yes or no) | no
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| What shape is the orbit of Earth around the sun? | elliptical
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| What 4 planets are the gaseous planets? | -Jupiter
-Saturn
-Uranus
-Neptune
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| What causes the temperature at the North and South Poles to remain so cold throughout the year? | because the sun's rays never hit it
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| What is the order of planets from closest to furthest from the sun? | Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
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| What causes the seasons? | sun's rays and tilt of axis
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| How long is Earth's rotation? | 24 hours
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| What does the Earth rotate on? | axis
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| A shooting star is really a ______? | meteorite
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| Why do craters last for millions of years on the surface of the Moon? | no oxygen, air or water
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| During which phase of the Moon is the Moon passing between the Earth and Sun? | new moon
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| Are tides (high or low) when the Moon and the Sun form an almost 90 degree angle with Earth? | low
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| Which part of a comet exists both when the comet is close to the Sun and when the comet is far away from the sun? | dust tails
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| How does Earth rotating on its axis help keep the planet at proper temperatures for life? | both day and night would have mild weather
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| What causes Mercury and Saturn to have years of different lengths? | Mercury is closest planet to sun. Saturn is the 6th planet from the sun and so rotation will be longer.
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| a rocky mass up to several hundred kilometers wide | asteroid
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| small asteroid | meteoroid
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| a piece of meteor that lands on earth and can leave craters as big as 200 meters deep and 1,200 meters wide | meteorite
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| How are asteroids, meteoroids, and meteorites related? | They are all a rock mass - some large and some small. Meteoroids are small asteroids. Meteorites are small meteoroids.
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