Unit 1 Science 2022/2023

When the sun warms water, which resulting process occurs?

• precipitation

• runoff

• evaporation

• condensation

Students observed a piece of iron change from shiny to rusty. What caused this change?

• a chemical reaction

• a heat reaction

• a cold reaction

• a physical reaction

One morning a student notices that the grass in an area is wet. although it had not rained during the night. What could have caused the grass to be wet?

• During the night water had evaporated from the trees in the area

• The air above the ground became warmer during the night and caused precipitation

• When the air cooled above ground during the night, water vapor condensed on the grass

• The grass soaked up water from the ground during the night.

Two liquids are poured together and a solid substance forms with no liquid remaining. Liquid 1 has a mass of 200 grams and liquid 2 has a mass of 100 grams. What would be the total mass of the solid substance formed?

• 100 grams

• 150 grams

• 250 grams

• 300 grams

Which is the best example of a new substance forming?

• lighting a match

• cutting a piece of paper

• popping a balloon

• hitting a nail with a hammer

How does the energy from the sun influence the water cycle?

• by trapping water particles in clouds

• by turning liquid water into water vapor

• by causing water to precipitate

• by creating winds in the atmosphere

How do plants return water back into the environment?

• by evaporation

• by condensation

• by transpiration

• by runoff

Water droplets forming on the outside of a cold glass on a hot, summer day is an example of which part of the water cycle?

• condensation

• evaporation

• precipitation

• transpiration

After lake water flows through a dam, which processes are most responsible for helping replace the water in the lake?

• precipitation and runoff

• transpiration and condensation

• condensation and runoff

• transpiration and precipitation