Q: Fact 1: Heating salt water causes the water to evaporate while the salt remains. Fact 2: When water evaporates, salts in the water remain and become more concentrated. Given the two facts above, what increases in concentration when water evaporates?

OPTIONS:
- nektar
- sugar
- sweat
- salt
- potash
- Gases
- maples
- energy

A: salt

Q: Fact 1: Microscope is used to see small things by biologists by making them appear bigger. Fact 2: Bacteria are too small to be seen without a microscope. Given the two facts above, what do biologists use to make bacteria appear bigger?

OPTIONS:
- tiny polyps
- it can be seen
- Magnifying glass
- motility
- Microscope
- Light
- Telescope
- Water reflections

A: Microscope

Q: Fact 1: Asandbar is formed by water moving sediment downstream. Fact 2: Shoreline currents carrying sediments build sandbars and spits across bay mouths. Given the two facts above, what moves sediment downstream?

OPTIONS:
- streams.
- High winds
- streams
- rivers
- Fish
- Tourists
- Currents
- flooding

A: Currents

Q: Fact 1: Ameasuring cup is used for measuring the volume of substances. Fact 2: With a measuring cup, pour different amounts of water into each cup. Given the two facts above, what can determine the amount of water?

OPTIONS:
- rainfall
- streams.
- the volume
- streams
- evaporation
- Temperature
- erosion
- vaporization

A:
the volume