On one summer day, the Sun heated the water in a swimming pool from 20oC in the morning to 24oC in the afternoon. If the pool held 40,000 liters of water (40,000,000 grams), how much energy, in Joules, did the water in the pool absorb that day?

why do the isotopes of a particular element behave differently in nuclear reactions but the same in chemical reactions? chemical reactions involve changes to electrons in an atom; isotopes do not differ in electrons, and so they react the same way during chemical changes.

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

: )