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Chapter 15-Part 2
Test Description: 14 review (5) and 15 (5)
Instructions: Answer all questions to get your test result.
1) A machine that changes only the direction of a force has a mechanical advantage of __________________.
A
1
B
100
C
10
D
2
2) A winding mountain road is an example of a (n) ____________.
A
inclined plane
B
lever
C
wedge
D
wheel and axle
3) When two or more simple machines work together, they are called a (n) __________________.
A
screw
B
compound machine
C
effort machine
D
simple machine
4) Three of the following simple machines are basically the same. The one that does NOT belong with the group is the ____________.
A
pulley
B
lever
C
wedge
D
wheel and axle
5) A heat engine _____________________.
A
changes thermal energy into mechanical energy
B
changes mechanical energy to thermal energy
C
changes mechanical energy into electrical energy
D
changes kinetic energy into thermal energy
6) In a diesel engine, the fuel is ignited by ______________.
A
spark plugs
B
expansion
C
glow plugs
D
compression
7) A device that can be used for cooling and heating is a _______________.
A
compressor
B
vaporizer
C
heat engine
D
heat pump
8) Temperature is a measure of _______________ of the particles in an object.
A
the average potential energy
B
the difference between the potential and kinetic energy
C
the average kinetic energy
D
the sum of the potential and kinetic energy
9) Heat is ___________ energy that is transferred from one object at a certain temperature to another at a different temperature.
A
electromagnetic
B
kinetic
C
thermal
D
solar
10) When a pot of water is put on a stove, the water at the top gets hot primarily by _______________.
A
conduction
B
radiation
C
convection
D
condensation
11) A lever with a mechanical advantage greater than 1 is used to ________________.
A
change direction
B
decrease force
C
increase distance
D
increase force
12) A green plant has _________________ energy.
A
electrical
B
kinetic
C
thermal
D
chemical
*select an answer for all questions
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