Melting means changing from a solid into a liquid by adding heat energy.
Heat energy from the sun is stored in the earth.
Melting means changing from a solid into a liquid by adding heat from the sun.
What means changing from a solid into a liquid by adding heat from the sun?

1. sunlight
2. sweating
3. freezing
4. rain
5. melting
6. softening
7. cooling
8. boiling