1 point 4. Which form of energy is pictured? Choose the best answer.
electric
O geothermal
O O O O O
Ohydroelectric
O solar
Othermal
5. Which form of energy is pictured? Choose the best answer.
1 point

Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.