G5 Revision

What is matter?

Jenny poured some hot chocolate into a cup and stirred it with a metal spoon.  She noticed the spoon was really warm.  What is the best explanation for this?

• The spoon is a conductor.
• The spoon reflects heat.
• The spoon is an insulator.
• She touched the spoon first and waited to touch the cup.

Andy stirred a hot drink in a styrofoam cup with a  metal spoon.  In what order did the thermal energy reach Andy's hand?

• cup-hot chocolate-hand
• hand-spoon-hot chocolate
• hot chocolate-spoon-hand
• hot chocolate-spoon-hand-cup

What observation can you make about what happened to the snowman?

• It changed from a liquid to a solid
• It changed from a liquid to a gas.
• It changed from a gas to a solid.
• It changed from a solid to a liquid.

When you leave your cold drink outside, the glass may have water drops on it.  This is an example of...

• condensation
• evaporation
• precipitation
• estuary

Which form of energy causes water to boil?

• sound energy
• mechanical energy
• thermal energy
• light energy

Which change is happening to the water?

• it is changing from a liquid to a gas
• it is changing from a liquid to a solid
• it is changing from a solid to a gas
• it is changing from a gas to a liquid

Which process does the diagram show?

• freezing
• boiling
• evaporation
• melting

In order for water to freeze the temperature must

• decrease
• increase
• stay the same

To measure the temperature difference between two cups of water, you would use a _____.

• measuring cup
• ruler
• thermometer
• balance scale