Fact 1: Heating a liquid can be used to identify that liquid 's boiling point. Fact 2: Heat is caused by vibrations of the atoms and molecules of substances. Given the two facts above, to identify that liquid 's boiling point requries?
OPTIONS:
- vibrations of the atoms
- kinetic energy
- degrees Celsius
- The bending of a ray of light
- degrees celcius
- Evaporation of water
- evaporative cooling
- fissures of hot, acidic water

Answer: vibrations of the atoms

Fact 1: Mechanical weathering is when rocks are broken down by mechanical means. Fact 2: Erosion begins with the weathering, or breaking down, of rocks and soil. Given the two facts above, what is it called when rocks are broken down mechanically?
OPTIONS:
- mines
- dangerous
- coral reef
- cracking
- tube
- loose soil
- calcite
- erosion

Answer: erosion

Fact 1: Gravity causes objects that have mass to be pulled down on a planet. Fact 2: Rocks have mass. Given the two facts above, what does gravity cause to be pulled down on a planet?
OPTIONS:
- matter
- heat
- earth
- solutes
- oceans
- Rocks
- people
- Lift

Answer:
Rocks