Planets
Which planet is the largest?
Jupiter
What is the difference between meteoroids and comets?
Meteoroids are rocks in space.
Comets are large collections of ice and dust in space.
Why is Pluto not considered a planet?
It hasn't cleared it's path of orbit around the sun and shares it with other objects.
What is the relationship between a planet's distance from the sun and the length of its year?
What is a large cloud of gas and dust in space?
Nebula
Uranus
What is the difference between a solar flare and solar wind?
Solar flares are powerful eruptions of magnetic energy from the sun.
Solar wind is a stream of electrically charged particles released from the sun.
Mercury
Give two examples of space probes.
Rover that lands on the moon or planet.
A satellite that orbits a moon or planet.
What is the cloud of gas and dust being pulled together to form a new star called?
Protostar
Which planet has no atmosphere?
Mercury
What is the difference between sunspots and prominences?
Sun spots are dark spots on the sun, made of high magnetic activity.
Prominences are loops connecting two sun spots.
What color stars have the coldest temperature?
Red
Sputnik 1- USSR
What is the blue-white hot core of a star that is left behind after its outer layers have drifted off into space?
White Dwarf
Which planet has the highest temperature? Why?
Venus- because of greenhouse gases in its atmosphere
What is the difference between the heliocentric and geocentric model of our solar system?
Heliocentric is a sun centered model.
Geocentric is an Earth centered model.
What color stars have the highest temperature?
What two elements make up the sun?
Hydrogen and Helium
What is the brilliant explosion of a dying supergiant star?
Supernova
Which planet has the coldest temperature?
Neptune
Explain the difference between apparent and absolute brightness.
Apparent is how bright a star appears from Earth.
Absolute is how truly bright a star is.
How many stars are in a galaxy?
How many galaxies are there in the universe?
Billions!
What is the difference between a revolution and a rotation of a planet?
A revolution is one object orbiting around another.
A rotation is something spinning on its own axis.
What is the theory of the first explosion that resulted in the formation and expansion of the Universe?
The Big Bang