Download NJASK Review – Answer Key

NJASK Review –
Answer Key
Ch. 12 Challenge
Matching:
1. Newton
2. lubricants
3. vacuum
4. pressure
5. barometer
6. force
7. Bernoulli’s Principle
8. friction
9. terminal velocity
10. gravity
Fill-In:
11. friction
12. Bernoulli’s Principle
13. Terminal velocity
14. gravity
15. gravity
16. friction
Ch. 13 Challenge
Matching:
1. velocity
2. acceleration
3. momentum
4. Newton
5. motion
6. inertia
7. speed
Fill-In:
8. speed
9. inertia
10. action force
11. inertia
12. motion
Ch. 14 Challenge
Matching:
1. Potential energy
2. energy
3. work
4. kinetic energy
5. joule
6. watt
7. power
Fill-In:
8. kinetic energy
9. potential energy
10. kinetic energy
11. thermal pollution
12. Law of Cons. of Energy
13. work
14. joule
15. power
16. watts
Ch. 15 Challenge
Matching:
1. effort force
2. pulley
3. inclined plane
4. work output
5. resistance force
6. work input
7. fulcrum
Applying Definitions:
8. A lever is a bar that is
free to turn around a
fixed point. A fulcrum
is fixed point around
which a lever turns.
9. A simple machine is
something that makes
work easier. Simple
machines include:
inclined plane, lever,
pulley, wheel and axle,
wedge. A compound
machine is composed of
two or more simple
machines.
10. Mechanical advantage is
the number of times a
machine multiplies the
effort force. Efficiency
is the ratio of work input
to work output.
11. Work input is the work
done ON a machine.
Work output is the work
done BY a machine.
12. Effort force is the force
you apply to a machine.
Resistance force is the
force that opposes the
effort force.
Ch. 17 Challenge
Matching:
1. medium
2. crest
3. amplitude
4. hertz
5. incident wave
6. normal
7. waves
Fill-in:
8. transverse wave
9. longitudinal wave
10. compression
11. wavelength
12. reflection
Ch. 18 Challenge
Matching:
1. Pitch
2. speed of light
3. vibration
4. overtone
5. timbre
6. ear
7. music
8. hearing
9. sound
10. decibels
Fill-In:
11. medium
12. echo
13. intensity
14. ultrasonic
15. fundamental tone