Ques: Q: What can echinoderms sense with their simple eyes? Choices: - colors - shapes - electricity - light A:
Ans: light

Ques: Q: What does an ammeter measure the flow of? Choices: - water under pressure - wind - magnetic fields - current through a circuit A:
Ans: current through a circuit

Ques: Q: What amazing machines smash particles that are smaller than atoms into each other head-on? Choices: - nitrogen accelerators - observant accelerators - absorption accelerators - particle accelerators A:
Ans: particle accelerators

Ques: Q: What is the most common fossil fuel? Choices: - diesel oil - uranium - methane - coal A:
Ans:
coal