our planet earth

about 79% of earth is filled with water

• true

• false

scientist believe that life on earth first appeared in water and then on land.

• true

• false

the two movements earth shows

• revolution and rotation

• north pole and rotation

• axis and revolution

the spinning of earth on its axis is called

• rotation

• revolution

the earth spins from east to west.

• true

• false

the movement of earth in an orbit is called revolution.

• true

• false

a year has how many days?

• 364¼

• 365

• 256

• 365¼

change of seasons is caused because of

• rotation and revolution

• revolution of earth and sun

• tilt of axis

• change in year