grade 5 , con 6 , lesson 1&2

When ice melts, it turns from ..........state to......... state.

• liquid - solid

• solid - liquid

• liquid - gas

• solid - gas

Ice can turn into water by.........

• cooling.

• freezing.

• rusting.

• heating.

The source of thermal energy which keeps living things alive on the Earth is the.........

• moon.

• fire.

• heater.

• Sun.

When the water is heated, its particles...............

• move slower.

• move faster.

• move with the same speed.

• do not move.

When we heat a liquid, the distance between its particles will.............

• decrease.

• increase.

• not be affected.

• become zero.

When ice is kept in a cold temperature, it.........

• turns into water.

• turns into steam.

• remains as it is.

• becomes unclear.

Ice changes from solid state to liquid state by increasing its.............

• length.

• mass.

• temperature.

• volume.

When particles of water absorbs light energy, they will..............

• move faster.

• vibrate slower.

• spin slower.

• become close together.

Which of the following matter particles are very close together?

• Oxygen gas.

• Water.

• Oil.

• Wood.

All the following happen to the particles of oil when it is heated, except that

• spin around faster.

• move faster.

• vibrate less.

• vibrate faster.