Ques: Q: What holds ionic and covalent compounds together? Choices: - gravity - water - magnetic force - electrostatic attractions A:
Ans: electrostatic attractions

Ques: Q: The turbine of a windmill spins and creates what? Choices: - grains - pollution - lightning - electricity A:
Ans: electricity

Ques: Q: What is another name for a reasonable explanation for something that might be formed near the beginning of a scientific inquiry into a problem? Choices: - experiment - conclusion - theory - hypothesis A:
Ans: hypothesis

Ques: Q: Huge calderas form when the mountain above an empty chamber of what collapses? Choices: - gas - mercury - coal - magma A:
Ans:
magma