Practice Quiz

ACT Science Exam Prep - Question List

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11. Which of the following is designed to produce an electromagnetic wave?
  1. Elastic cords
  2. Laser pointers
  3. Metal springs
  4. Ripple tanks
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12. A star suddenly explodes. Which of the following types of waves reach Earth’s surface?
  1. Light waves
  2. Sound waves
  3. Sound waves followed by light waves
  4. Light waves followed by sound waves
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13. Approximately how many years ago was the earth formed?
  1. 4.5 billion years ago
  2. 2.5 billion years ago
  3. 4.5 million years ago
  4. 2.5 million years ago
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14.

What is the title for a person who advises on matters of food and the nutritional impact it has on health?

  1. A medical doctor
  2. A physical therapist
  3. A nutritionist
  4. A food scientist
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15. Which of the following statements best explains why there is no change in temperature once thermal equilibrium between two objects in contact is reached?
  1. Heat can flow between two objects in contact.
  2. Heat does not flow between objects in contact at the same temperature.
  3. Heat does not flow spontaneously from a cooler object to a warmer object.
  4. Heat flows by conduction, convection, and radiation when the temperatures are the same.
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