1. How can the momentum of a moving object be found? A. By multiplying its mass by its acceleration.
B. By dividing its change in distance trabeled by the time it travels.
C. By dividing its velocity bu the time it travels.
D. By multiplying its mass by its velocity.

2. In everyday life, changing the speed of a moving object will change all but which value?
A. Acceleration
B. Mass
C. Velocity
D. Momentum

3. What does Newton's second law of motion state?
A. For every force there is an equal and opposite force.
B. Momentum equals mass times velocity.
C. Force equals mass times acceleration.
D. An object at rest stays at rest and an object in motion stays in motion with the same speed and the same direction unless acted upon by an unbalanced force.

4. If the total net force on a system is zero, assuming the mass remains constant, which must be true?
A. The velocity is increasing.
B. The acceleration is increasing.
C. The acceleratin is zero.
D. The velocity is decreasing.

5. Which scenario describes an object experiencing zero net force?
A. A balloon floating upward at a constant velocity.
B. A plane landing on a runway.
C. A rock falling off a cliff.
D. A car driving around a circular race track.

19. explain why a magnet from your refrigerator could not be used to lift something as heavy as a car. (chapter 7 – pages 202-203) 20. can a magnet ever have a single pole? explain your answer. (chapter 7 – page 208) 21. what happens to the wavelength of a wave if the frequency is increased? (chapter 9 – pages 280-281) 22. an ocean wave has a wavelength of 10 m and a frequency of 4.0 hz. what is the velocity of the wave? show the appropriate equation from your book and show your work with units. (chapter 9 – page 282) 23. as you sit outside, the sound of a siren becomes lower in pitch. is the emergency vehicle moving away from or towards you? explain how you know. (chapter 10 – page 315-316) 24. why are two astronauts in space unable to hear one another? (chapter 10 – page 307) 25. explain in at least 3 sentences how electromagnetic waves form. (chapter 11 – page 338-339) 26. using the chart on page 345 in your textbook, what are the three types of electromagnetic wave with wavelengths shorter than those of visible light. give an example of each. (chapter 11 – pages 345-351) 27. explain why a leaf usually appears to be green, but a rose typically appears red. (chapter 12 – page 373) 28. what is the difference in light that is refracted compared to light that is reflected? think in terms of speed of light as well as what happens to light waves when they interact with a medium. (chapter 12 – pages 369-370) 29. how are concave and convex lenses different? (chapter 13 – page 408-410) 30. what type of mirror is used in rearview mirrors in cars? why is it important that these mirrors have the warning, “objects in mirror are closer than they appear.”? (chapter 13 – page 405)

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island