Water Cycle Notes-Severson

What is the best definition of Thermal Energy?

• The total kinetic energy (vibrations) in a substance.

• How hot or cold something is.

• Thermal energy is the energy stored in chemical bonds.

When water has high density it will?

• 
• 

When water has low density it will....

• sink

• float/rise

What will cause a change in density for water? (Choose all that apply)

• Increase in thermal energy

• Decrease in Thermal energy

• Thermal energy remains constant (the same)

The sun's heat transfers to the water by...

• radiation
• conduction
• reflection

• convection

Why do the water molecules/particles spread out when heated by the sun?

• Water molecules spread out when heated because they gain energy, increasing their movement and causing them to push apart.
• Water molecules remain close together when heated, as they lose energy and slow down.
• Water molecules spread out due to a decrease in temperature, causing them to get closer.

Fill in the blank: The density of the water is ________ because the thermal energy increases in evaporation. 

• increased
• unchanged
• lowered

What cause the water to become more dense and turn back into a liquid in condensation?

• Increase in Thermal Energy

• Decrease in thermal energy

• Constant Thermal energy

During precipitation the thermal energy is at its lowest in the water cycle. What should happen to that water?

• Should fall because low thermal energy is low density

• Should rise because low thermal energy is low density

• Should fall because low thermal energy is high density

• Should rise because low thermal energy is high density.

Where is the correct stage to start the water cycle?

• Condensation
• Precipitation
• You can start anywhere because it is a cycle

• Evaporation