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18 Cards in this Set

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  • Back
Mercury is the closest planet to what?
the sun
In what ways are comets similiar to asteroids?
Both orbit the sun.
Which body orbits a planet?
a moon
What causes a solar flare?
an eruption on the sun's surface
Scientists think the number of sunspots are affected by ________________.
the temperature on Earth
Which planet in the solar system has the most rings surrounding it?
Saturn
The part of the planet that points away from the sun is called the __________________.
tail
How do scientists think planets were formed?
The planets formed from a cloud of gas and dust.
The sun's core produces large amounts of heat and ______________.
light
In which way does a telescope change how objects look?
It makes distant objects look nearer.
One rotation of a planet is equal to ______________.
a day
Most of the sun's mass is made up of __________________ gas.
hydrogen
Which two gases make up most of Earth's atmosphere?
oxygen and nitrogen
A meteorite is a meteroid that has _________________.
landed on Earth
What type of information is most likely to be collected by a space probe?
surface temperatures and atmospheres of planets
One revolution of Earth takes _____________.
1 year
Which feature can be seen only during an eclipse of the sun?
the sun's corona
The surface of Venus is ____________________.
hotter than Earth's