EarthLife1

Many studies have shown similarities of Earth and Venus. What makes Earth similar with Venus?

• Earth and Venus have the same orbit.

• Earth and Venus have the same diameter.

• Earth and Venus have the same atmosphere

• Earth and Venus are of the right size to hold sufficient atmosphere.

Which statements best describe planet Earth?

• It has gases.

• It supports life

• It has rocky core.

• It supports other planet

Planet Earth is considered uniquely different from other planets in the Solar system. Which among the given choices correctly answers the statement?

• Earth is the only planet that changes structure.

• Earth is the only planet that turns around in space.

• Earth is the only planet that is covered mostly with water.

• Earth is the only planet that is mostly made from rocks

Which is not true about Earth when compared to Mars?

• It has life mechanism.

• It has water and atmosphere

• It has carbon dioxide in the atmosphere

• It has atmosphere that supports oxygen

Which statement does not describe planet Earth?

• It has 70% of water

• It is rocky, terrestrial planet.

• It has solid and active surfaces

• It has atmosphere made of Nitrogen only.

The atmosphere of the Earth is composed of ___Oxygen and ___ Nitrogen.

• 0% and 100%

• 21% and 78%

• 78% and 21%

• 50% and 50%

When Nitrogen is returned to the soil when dead plants decompose is an interaction that occurs in what subsystem?

• Biosphere and atmosphere

• geosphere and atmosphere

• atmosphere and geosphere

• biosphere and atmosphere

What subsystem will network with biosphere for photosynthesis to take place.

• biosphere

• geosphere

• hydrosphere

• atmosphere.

How does matter and energy flows across the four subsystem of planet Earth?

• Energy flows through atmosphere through conduction.

• Energy flows through atmosphere through convection.

• The biosphere provides gases and heat to the atmosphere.

• Hydrosphere provides land to the geosphere.

Relationship between the complex communities of individual organism is seen in different systems of the Earth. What do you call the unit in nature?

• ecosystem

• complexity

• ground

• system