1.It is a weather disturbance that occur when masses of warm, moist air along Earth’s surface and rapidly forced upward into cold, dry layers.

-no choices-

Why people from all walks of life must know the weather changes within the day?

A. To avoid danger and accidents.
B. To be able to enjoy and attend the party.
C. To have more time planning their activities.
D. To be able to wear the right kind of clothes.

3.How is a wind name?

A. The direction to where it belongs.
B. Patterned after the western man.
C. The direction from where it originates.
D. After the name of the region where it is from.

4.Paul observed some old rocks near their house. He also saw that little plants were growing on these rocks. What will happen to those rocks after a few years?

A. The rocks will not change.
B. The rocks will not break.
C. The rocks will become harder.
D. The rocks will break and change.

5.What makes a star shines?

A. the increase surface temperature
B. the changing size as it explodes
C. the changing cycle of its brightness
D. the nuclear fusion of hydrogen to helium