Energy Transfer and Climate Dynamics on Earth

The video explains how life on Earth relies on solar energy, with only a small fraction reaching the planet. Plants use a tiny portion for photosynthesis, while the rest is reflected or absorbed by clouds, the atmosphere, and Earth's surface. This absorption leads to uneven heating, causing weather phenomena like winds and ocean currents. Despite absorbing heat, Earth maintains an energy balance by radiating heat back into space, preventing overheating and sustaining weather patterns.

What percentage of the Sun's energy is used by plants for photosynthesis?

• 1%

• 0.1%

• 5%

• 10%

How much of the Sun's energy is reflected back by clouds and particles in the air?

• 5%

• 10%

• 50%

• 25%

What causes the uneven heating of the Earth's surface?

• The Sun's energy received differently at different latitudes

• The Earth's magnetic field

• The Moon's gravitational pull

• The Earth's rotation

Which processes are responsible for heating up the atmosphere?

• Radiation and reflection

• Convection and conduction

• Evaporation and condensation

• Absorption and emission

How does the Earth prevent itself from getting too hot?

• By absorbing more energy

• By radiating heat back into space

• By increasing its surface area

• By reflecting all solar energy

What percentage of the Sun's energy is absorbed by the Earth and then radiated back into space?

• 70%

• 50%

• 90%

• 30%