Density
What is the formula for density?
Mass / Volume
Name the 3 main states of matter
Solid, Liquid, Gas
Are Terrestrial Planets dense or light?
What gas makes up most of Earth's atmosphere?
Nitrogen
What is the frost line?
The distance from the sun where it's cold enough for ice to form.
Which has a higher density - a rock or a balloon?
A rock!
What happens to molecules when heated?
They move faster and spread apart.
What are the 4 Jovian Planets (Gas Giants)?
Jupiter, Saturn, Uranus, Neptune
Why is Venus's atmosphere dangerous for humans?
What did the solar system form from?
A cloud of gas and dust (solar nebula)
Why does a metal cube feel heavier than a plastic cube of the same size?
Metal has more mass/ atoms packed into the same space!
What state of matter has atoms packed tightly together?
Solid
What are 4 Terrestrial Planets?
Mercury, Venus, Earth, and Mars
Why can outer planets hold onto hydrogen and helium ?
They are colder and have stronger gravity
What type of materials formed near the sun?
Rock and Metal
What could increase the density of a material?
Tightly packed particles/ more mass in same volume
Describe the molecules in a gas.
Far apart---moving quickly
Why are Gas Giants less dense?
Made mostly of light gasses like hydrogen and helium
What is one role of Earth's atmosphere?
Blocks Radiation, the vacuum of space, and small space debris
What is Gravitational Collapse?
When gas is pulled together by gravity to form Gas Giants.
What are the units for density?
g/mL or g/cm^3
Grams per cubic liter or Grams per cubic meter
What happens to molecules when temperature drops?
Molecules slow down and get closer
What is one reason Jovian Planets are larger?
They collected more gas from the solar nebula
or....
The strong gravitational pull from Jovian planets traps gas inside.
What causes atmosphere differences between inner and outer planets?
Solar wind, temperature, and gravity.
What stage comes after condensation in planet formation?
Accretion