Solar System Basics
This is the center of our solar system.
the sun
These planets are rocky and have solid surfaces.
Terrestrial planets
A meteoroid that burns up in Earth’s atmosphere is called this.
Meteor
The habitable zone is also called this zone.
Goldilocks Zone
Why do scientists search for planets in the habitable zone?
To find planets that could support life
The solar system is made of planets and other objects that do this around the Sun.
Orbit
These planets are gas giants
Jovian
A small rocky object orbiting the Sun.
asteroid
The habitable zone is the distance where this can exist on a planet.
liquid water
The telescope that took detailed pictures of space.
Hubble Space Telescope
The theory that explains how the universe began and is expanding.
Big Bang Theory
Name the 4 terrestrial planets
Mercury, Venus, Earth, Mars
An icy object that forms a tail near the Sun.
Comet
Name two conditions needed for life on a planet.
Liquid water / atmosphere / moderate temperature / energy source
The Sun-centered model of the solar system.
Heliocentric model
The Sun is mostly made of these two elements.
hydrogen and helium
Name the four Jovian planets
Jupiter, Saturn, Uranus, or Neptune
The asteroid belt is located between these two planets.
Mars and Jupiter
If Earth were much closer to the Sun, this would happen to water.
It would evaporate / boil away
When the universe expands, galaxies are doing this.
Moving away from each other
The force that keeps planets in orbit around the Sun.
gravity
This former planet is now classified as a dwarf planet.
Pluto
Planets that orbit stars outside our solar system are called this.
exoplanets
If Earth had much less mass, this would happen to the atmosphere.
It would escape into space / Earth would lose its atmosphere
small mass (size/weight)= weaker gravity= gases and atmosphere escape
What is happening to the size of space over time
expanding