Greenhouse Effect Explained

What is the primary role of Earth's atmosphere in the natural greenhouse effect?

• Reflecting all sunlight back into space.

• Trapping heat energy to warm the planet.

• Creating strong wind currents.

• Producing oxygen for living organisms.

How does the energy re-emitted by Earth's surface differ from the energy it initially receives from the sun?

• Re-emitted energy is shortwave radiation.

• Re-emitted energy is light energy.

• Re-emitted energy is longwave radiation.

• Re-emitted energy has a shorter wavelength.

What would be the approximate average temperature of Earth if the natural greenhouse effect did not exist?

• -270 °C

• 15 °C

• -18 °C

• 0 °C

Which type of radiation are greenhouse gases primarily able to absorb and re-emit?

• Shortwave radiation

• Longwave radiation

• Visible light

• Ultraviolet radiation