Physical Science Second Nine Weeks Exam Study Guide
Chapters: 14: Simple Machines
16: Waves
17: Sounds
18: Electromagnetic Waves
19: Lights, Mirrors, & Lenses
1. If you squeeze the bottom of a closed tube of toothpaste, the pressure is increased ____.
2. In a hydraulic system, the pressure on the large piston is ____ the pressure on the small piston.
3. In a hydraulic system, the force exerted on the large piston is ____ the force exerted on the small piston.
4. A hydraulic system is used to ____.
5. Which one of the following is NOT an example of work being done?
a. the Moon orbiting Earth
b. pushing a box from the bottom of a hill to the top of the hill
c. pulling a sled across a field covered with snow
d. ifting a bookbag off the floor
6. A slanted surface used to raise an object is a(n)____.
7. A device that does work with only one movement and changes the size or direction of a force is a(n) ____.
8. A bar that is free to pivot about a fixed point is a ____.
9. The rate at which work is done is called ____.
10. The work output of a machine divided by the work input is the ____ of the machine.
11. The amount by which a machine multiplies an input force is called the ____.
12. An inclined plane with one or two sloping sides forms a machine called a ____.
13. An inclined plane wrapped around a cylinder post is a ____.
14. When two or more simple machines work together, they are called a(n) ____.
a. compound machine
c. screw
b. effort machine
d. simple machine
15. Which one of the following is NOT an example of a mechanical wave?
a. sound wave
c. earthquake wave
b. water wave
d. radio wave
16. Which one of the following is NOT an example of an electromagnetic wave?
a. sound wave
c. red light
b. x-rays
d. gamma rays
17. The speed of sound through air is about ____.
18. When light bounces off a surface it is called ____.
19. Constructive interference occurs when waves meet ____.
20. The speed of electromagnetic waves is ____.
21. The number of waves that pass a certain point in one second is the wave’s ____.
22. A wave transfers ____.
23. Electromagnetic waves are produced by ____.
24. The longest wavelength in the electromagnetic spectrum is the ____.
25. The electromagnetic waves with wavelengths slightly longer than visible light are ____.
26. ____ are used for medical imaging.
27. Your body needs ____ to make vitamin D.
28. Television uses ____ to transmit signals.
29. The material in which a wave travels is called ____.
30. Glass is an example of a ____ material.
31. If an object looks blue, it reflects ____ waves.
32. How would you describe the image formed by a convex mirror?
a. upright and larger than object
c. inverted and larger than object
b. upright and smaller than object
d. inverted and smaller than object
33. If light waves change speed when they pass from one medium into another, the light will be ____.
34. Which one of the following is thick in the middle and thin at the edges?
a. concave lens
c. concave mirror
b. convex lens
d. plane mirror
35. Microscopes use ____ lenses.