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Science Ch. 11
Question | Answer |
---|---|
The inner planets are those closest to the _____. They are also called the _____ _____. | Sun, terrestrial planets |
The inner planets are made of _____ and metallic materials. | rock |
The outer layers of the inner planets are in the ____ state. | solid |
_____ is the closest planet closest to the Sun. | Mercury |
Mercury has no gases close to its surface, which means it has no______. | atmosphere |
Because of its small mass, Mercury's ______ is not strong enough to hold to its surface. | gravity |
Because Mercury has no wind to move energy from place to place, the temperatures on the side of Mercury facing the Sun are always extremely ____. | hot |
Mercury's surface is covered with __ ____, smooth plains, and high cliffs. | impact craters |
_____ is the second planet from the Sun. | Venus |
venus ______ more slowly than it revolves, so a day on venus is longer than a year on earth. | rotates |
Unlike most other planets, venus rotates from ____ to _____. | east, west |
Most of venus's atmosphere is made up of _____ ______. | carbon dioxide |
Venus is covered by a thick layer of ______. | clouds |
The clouds on Venus are made of ______. | acid |
Venus is the _____ planet in the solar system. | hottest |
the high temperatures on Venus are caused by the ____ _____ | greenhouse effect |
The greenhouse effect increases surface temperature because the _____ _____ traps solar energy | carbon dioxide |
Most of the surface of Venus is covered by solidified ______ | lava |
The third planet from the Sun is _____. | Earth |
Earth's atmosphere is made up of ___ ____ and a mixture of gasas. | water vapor |
the atmosphere produces a _______ ____ that increases Earth's average surface temperature. | greenhouse effect |
_____ s supported on Earth because of its atmosphere, large bodies of liquid water, and moderate temperature range. | Life |
Earth ahs a solid inner core and a _____ outer core. | liquid |
the ____ surrounds the outer core | mantle |
Earth's crust is broken into large sliding _____ | plates |
Mars is the ____ planet from the Sun. | fourth |
Many probes have examined the surface of Mars; most have looked for signs of _____. | water |
Ice caps on Mars are made up of ice and frozen ____ ____. | carbon dioxide |
Features on Mars's surface include craters, lava flows, canyons, and the largest known _____ in the solar system. | volcano |
The outer planets are made of materials that are usually ____ on Earth. | gases |
Gravitational forces produced by the large sizes of these planets change gases into _____. | liquids |
_____ is the largest planet in the solar system. | Jupiter |
Although it takes 12 years to revolve around the Sun, Jupiter _____ faster than any other planet | rotates |
jupiter has a system of _____ around it. | rings |
Jupiter's rotation stretches its clouds into colorful ____ _____ | swirling bands |
The ___ ____ ____ on jupiter is a storm that has lasted more than 300 years | Great Red Spot |
the four largest moons of Jupiter are called the ____ ____. | Galilean moons |
Like Jupiter, saturn rotates _____ and has clouds in bands | rapidly |
Saturn has the largest ____ system in the solar system | ring |
Saturn has ____ bands of rings, each of which contains thousands of smaller rings. | seven |
The rings are made mainly of ___ particles | ice |
Most of Saturn's moons are small, but one of them,____, is larger than the planet Mercury | Titan |
Venus rotates ______ | backwards |
Uranus might have a rocky ______ | core |
Which planet has the greenhouse effect on steroids? (Saturn, Mars, Jupiter, Earth) | Jupiter |
The rotational axis of Uranus is _____ more than the other planets | tilted |
the atmosphere and interior of neptune are similar to _____ | Uranus |
A dwarf planet is a sphere that orbits a ____ | star |
A dwarf planet has objects similar in _____ orbiting near it or crossing its orbital path | mass |
The dwarf planets in the solar system are ____, Ceres, Eris, Makemake, and Haumea | Pluto |
Asteroids orbit the Sun in a band between _____ and Jupiter | Mars |
Asteroids are chunks of rock and ____ | ice |
comets are made up of rocks, ice, and ____ | dust |
_____ between the particles in a comet holds it together | Gravity |
comets ____ the Sun in long elliptical orbits | orbit |
As a comet approaches the Sun, a bright ____ can develop on the comet | tail |
The ______ is the solid, inner part of a comet | nucleus |
As the comet approaches the Sun, it heats, changing some ice in the nucleus into a ____ | gas |
Energy from the Sun pushes gas and dust particles away from the nucleus and makes it ______ | glow |
A small, rocky particle that moves through space is a _____ | meteoroid |
As it passes through Earth's atmosphere, friction with the air makes a meteoroid and the air around it ____ | glow |
A streak of light in the atmosphere made by a glowing meteoroid is a _____ | meteor |
Most meteoroids ____ up in the atmosphere | burn |
a meteoroid that strikes the surface of a planet or a moon is called a _____ | meteorite |
A meteorite can form a bowl- shaped depression called a ______ ____ in the surface it strikes | impact crater |
The ____ in the solar system orbit the Sun | planets |
the Sun and the objects that orbit it make up the ____ ____ | solar system |
the largest object in the solar system is the _____ | Sun |
he Sun is a star made up of mostly ___ gas. | hydrogen |
____ _____ produces enormous amounts of energy in the Sun. | nuclear fusion |
The largest object in the solar system is the _____ | Sun |
_____ _____ produces enormous amounts of energy in the Sun | Nuclear Fusion |
The Sun is a star made up mostly of _____ gas. | hydrogen |
Objects that orbit the Sun include planets, dwarf planets, asteroids, and _____. These objects _____ the Sun's light. | comets, reflect |
Objects orbit the Sun because it applies ______ forces on them. | gravitational |
A planet has a nearly ______ shape | spherical |
the mass of a planet is much ____ than the mass of nearby objects | larger |
There are ____ planets in the solar system | eight |
The four planets closest to the sun are called the ____- planets | inner |
Inner planets are made mainly from ____ ____ materials | solid rocky |
The four planets farthest from the Sun are called the ____ planets | outer |
Outer planets are made mostly of ice and ____ | gases |
Because the outer planets are much larger than the inner planets, they are sometimes called___ ___ | gas giants |
A ____ ____ is a spherical object that orbits the Sun, is not the moon of another planet, and has less mass any of the other planets | dwarf planet |
Millions of small, rocky objects called _____ orbit the sun in a belt between Mars and Jupiter | asteroids |
A ____ orbits the sun in an oval- shaped orbit and is made of dust, gas, and ice | comet |
The _______ ______ is used to measure long distances in the solar system | astronomical unit |
One astronomical unit (AU)is the average distance from Earth to the ____ | Sun |
One way an object in the solar system moves is by orbiting, or ____, around another object | revolving |
the amount of time it takes an object to revolve once around the sun is its ____ __ ______ | period of revolution |
Objects in the solar system also spin, or _____ | rotate |
the time it takes an object to rotate once is its ___ ___ ____ | period of rotation |
The shape of a planet's orbit is an _____, which is a stretched-out circle | ellipse |
The Sun is at one of the _____ of the ellipse, so the distance between a planet and the Sun changes as the planet moves | foci |
A planet moves ______ when it is closer to the Sun than when it is farther away. | faster |
What is the order of the eight planets? Starting form the Sun | Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune |
determine the shape of the ellipse | foci |
what are five dwarf planets that we talked about? | Pluto, Ceres, Makemake, eris, Haumea |