(Q).
Q: What is the transfer of energy by waves called? Choices: - vibration - convection - evaporation - radiation A:
(A).
radiation

(Q).
Q: Different isotopes of an element have different mass numbers because they have different numbers of what? Choices: - protons - electrons - nuclei - neutrons A:
(A).
neutrons

(Q).
Q: What layer of earth contains abundant oxygen, which can combine with other elements to create oxide minerals? Choices: - the core - the surface - the tectonic plates - the crust A:
(A).
the crust