Question

A greenhouse gas traps emitted by the Earth's surface.

• A. to emit heat
• B. to produce heat
• C. to trap heat

Answer 1

The correct option is C to trap heat

Energy from the Sun reaches the Earth as heat.

• Some of this heat energy is subsequently radiated into space.
• While some of it is trapped by greenhouse gases in the atmosphere and reflected back to Earth.

This is a natural process, but in recent decades, human activities have led to an increase in the release of greenhouse gases in the atmosphere which is now trapping too much heat.

This is ultimately contributing to global warming and to associated climatic changes.