Water and changes of states, water cycle

Which of the following processes are important for water cycle?

• Boiling

• Freezing

• Evaporation

• Condensation

X: ___________

Y: ___________

• A and C only

• A and D only

• B and C only

• B and D only

When water is put into the freezer, it _____ heat and turn into ice.

What is the boiling point of water?

• 0°C

• 100°C

• 80°C

• -100°C

What is the change in state of water for freezing?

• liquid to solid

• solid to liquid

• water to ice

• ice to water

• 1

• 2

• 3

• 4

• 1

• 2

• 3

• 4

Four identical containers A, B, C and D were filled with the same volume of water. They were left in four places under different conditions for 3 hours as shown in the table .

• 
• 
• 
• 

A beaker of ice was heated over a period of time. The changes in temperature are shown in the graph.

Which of the following correctly matches the processes to the parts of the graph?

• Melting: AB Boiling: BC

• Melting: AB Boiling: CD

• Melting: BC Boiling: AB

• Melting: BC Boiling: CD