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49 Cards in this Set

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  • Back
What is the planet closest to the sun?
The second planet from the sun is what?
Most of the time, this planet is farthest from the sun.
Which of the following planets is the farthest from the sun. Venus, Mars, Saturn, Jupiter
What is the major source of solar system energy?
the sun
The sun provides what for our solar system?
Rotation of a planet is best described as a. traveling around the sun, b. staying in one spot, c. spinning on its axis or d. spiraling out of control
c. spinning on its axis
Planets _____ the sun.
a. rotate around
b. revolve around
c. spiral toward
d. stay in one spot in relation to
b. revolve around
What do all the inner planets have in common?
Small & rocky
What do the first four outer planets have in common?
Large & gaseous
Planetary orbits are shaped like: a. circles, b. spirals, c. ovals, d. spheres
c. ovals or ellipses
Planets orbit the sun a. in circles, b. by rotation, c. in ellipses d. at the same speed.
c. in ellipses
Water is a solid, liquid and gas on what planet?
This planet has the most complex ring system made of hundred of ringlets.
The great red spot is found on this planet.
Two of the inner rockey planets are: a. Mars & Jupiter, b. Mercury & Mars
C. Earth & Saturn, D. Uranus & Neptune
b mercury & mars
What two planets have similar mass and size?
Earth & Venus
Methane give what planets its blue-green color.
Uranus & Neptune
Day and night are caused by what?
the rotation of Earth on its axis.
One complete revolution of Earth around the sun takes about how long?
one year.
Earth has seasons because ???
It is tilted on its axis as it moves around the sun.
Earth's rotation takes about how long?
24 hours
The sun produces energy by what process?
Nuclear fusion
What layer are you looking at when you look at a photograph of the sun?
Earth is unique among the planets because of what?
Its water - oceans.
Venus & Earth are much alike in terms of what?
size and density
Uranus is different from most other planets, Why?
It rotates on its side.
Pluto is different from the other outer planets, why?
It is small and has a solid surface.
Which of the following planets is least like the others listed? a. Neptune, b. pluto, c. uranus d. Saturn
b. pluto
The two factors that combine to keep the planets in orbit are what?
Gravity & inertia
The solar wind is a stream of electrically charged particles produced by the sun's _______.
When compared to the gases around them on the sun, sunspots are ______
When solar features can increase the solar wind, sometimes causing electrical power problems on Earth. These are called what?
Solar flares
When the north end of the Earth's axis is tilted toward the sun, North America will experience what?
Name the belt that lies between mars and jupiter.
asteroid belt
The planet in our solar system that is known as Earth's twin.
Copernicus explained what?
That the sun is at the center of the solar system.
The planet that is the hottest due to the greenhouse effect.
When the solar system formed, the spheres that lost most of their gases became what kind of planet?
Inner planets
Pluto & the 10th planet are different from the other outer planets, why?
small & rocky
The solar system formed from what?
a giant cloud of gas & dust
When a meteooroid enters Earth's atmosphere, it produces a streak of light called a what?
This planet is tilted on its side for rotation. Its rings run from North to Souht, not the usual East to West.
This planet has a violent storm called the Great Red Spot on it.
This planet could float in water due to its low density.
Uranus is different from most other planets because why?
It rotates on its side.
On this planet only 2% of the sunlight hits this planet's surface due to the dense clouds.
Name 3 things that the inner planets have in common.
iron cores
Name 3 thing the outer planets have in common.
no iron core