Question

On a summer afternoon, the sand on the beach can get very hot. When you step on the sand in bare feet, you can burn yourself.

Answer 1

Heat from the Sun is transferred to the sand without direct contact. This heat is then transferred to your feet by direct contact.

Answer 2

The second sentence best represents the situation because the sun does not touch the sand so direct contact is not made. Then, your feet do touch the sand so direct contact is made. Thus, "Heat from the sun is transferred to the sand without direct contact. This heat is then transferred to your feet by direct contact." is the best answer.