Earth works like terrenium because it has all ____ domains of the earth.

• 3

• 2

• 1

Why this man is floating in the sea?

• Water has low density

• Water has lots of dissolved salt

• Man know swimming

Precipitation involves rain,snow and hailstone. True and false.

Ocean and sea has major role in our environment. How? Any two points.

Waves ,tides and Currents are all the types of ocean circulation. Why

• yes, All the movement of the water.

• False

• Only waves and tsunami

High tide helps ships to arrive at the harbour easily. Why ? answer In one or two line.

Difference between spring and neap Tide.

• One is highest and one is lowest tide.

• One occurs at full moon other is first quarter of the moon

• Both are helps in catching fish.

What causes the formation of ocean currents ?

• Convection process

• Temperature difference

If we add lots of salt to the water, it becomes highly dense.

• True

• False

• It becomes less dense

Equator receives highest amount of heat ?