Unit 4, LS5 Vocab Review: Comets, Asteroids and Meteoroids

Friction

• force of attraction between two objects

• force that resists motion between two objects, generating heat in the process

• force that holds the nucleus of an atom together

• force assoicated with the decay of a nucleus

Weight

• how much mass an object has

• how heavy something is

• the impact of gravity on a mass

• the impact of how many atoms an object has on a mass

Asteroid

• a large, irregularly shaped rock in space that orbits the sun

• a small pebble in space

• a small pebble that is burning up in the atmosphere of a planet

• a large irregularly shaped rock in space that orbits a planet

What is a comet?

Meteoroid

• A small rock/pebble in space

• A small rock/pebble that is burning up in the atmosphere

• A small rock/pebble from space that has fallen to Earth's surface

• A hole in the ground left behind by the impact of an object from space

Meteor

• A small rock/pebble in space

• A small rock/pebble that is burning up in the atmosphere

• A small rock/pebble from space that has fallen to Earth's surface

• A hole in the ground left behind by the impact of an object from space

A large, irregularly shaped rock in space that is made mostly of materials such as iron and nickel

• S class asteroid

• M class asteroid

• Comet

• C class asteroid

A large, irregularly shaped rock in space that is very dark-colored and difficult to see because of the material from which it is made

• S class asteroid

• M class asteroid

• Comet

• C class asteroid

Oort Cloud

• "Shell" of fragments of ice and dust at the edge of our solar system that is the "home" or source of long period comets

• The area just outside Neptune's orbit that is the "home" or source of short period comets

• The area between Mars and Jupiter where most asteroids can be found

• The name given to the collection of moons that orbit Saturn (145 in total!)

Kuiper Belt

• "Shell" of fragments of ice and dust at the edge of our solar system that is the "home" or source of long period comets

• The area just outside Neptune's orbit that is the "home" or source of short period comets

• The area between Mars and Jupiter where most asteroids can be found

• The name given to the collection of moons that orbit Saturn (145 in total!)