Vocabulary
A small group of planets, moons, and a star that are bound together by gravity.
Solar System.
Answers may vary within range of definition.
where is the sun in our universe?
the middle
Planets closer to the Sun receive more of this...
Solar Irradiance
What was the first stage of the Sun's being?
Molecular Cloud
The planets farther from the sun are?
cold and/or gas giants.
A force that attracts a body towards another body having mass
Gravity
(true/false) The sun gives energy from irriance.
true
The closer planets are to the sun the .... the planet is.
the hotter the planet is.
What is the second stage of the Sun's formation?
Protoplanetary disk
Solid planets are made of what........?
metals/rocks
A flux of radiant energy
Irradiance
Is the third planet from the sun, hot, cold, or in the middle?
Its in the middle the third planet from the sun is Earth
Is Uranus 60 kelvin or 320 kelvin?
60 kelvin
What is the protoplanetary disk made of?
Dense gas and dust
Gas giants have a base of..........?
hydrogen/helium
A cloud of gas and dust, in which molecules form
Molecular Clouds
What cores do gas planets have?
Icy cores.
Is Mars around 60 kelvins or 220 kelvin?
220 kelvin
Gravity pulls what towards the sun?
Rocks and metals
The planets were pulled together by what force?
Gravity
Rotating disk of dense gas surrounding a new star
Protoplanetary Disk
What color is the Sun?
Sun-colored
About how cold is Neptune?
(In Kelvin)
50 kelvin
What rotated around the sun?
Hydrogen clumps.
How long did it take to form the Solar System as we know it today?
*Hint, below 50 billion years
46 billion years