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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
2
C
10
D
100
2) A winding mountain road is an example of a (n) ____________.
A
lever
B
inclined plane
C
wedge
D
wheel and axle
3) When two or more simple machines work together, they are called a (n) __________________.
A
compound machine
B
simple machine
C
effort machine
D
screw
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
wheel and axle
C
wedge
D
lever
5) A heat engine _____________________.
A
changes kinetic energy into thermal energy
B
changes mechanical energy to thermal energy
C
changes thermal energy into mechanical energy
D
changes mechanical energy into electrical energy
6) In a diesel engine, the fuel is ignited by ______________.
A
compression
B
expansion
C
spark plugs
D
glow plugs
7) A device that can be used for cooling and heating is a _______________.
A
vaporizer
B
compressor
C
heat pump
D
heat engine
8) Temperature is a measure of _______________ of the particles in an object.
A
the average kinetic energy
B
the average potential energy
C
the difference between the potential and 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
solar
C
kinetic
D
thermal
10) When a pot of water is put on a stove, the water at the top gets hot primarily by _______________.
A
convection
B
condensation
C
conduction
D
radiation
11) A lever with a mechanical advantage greater than 1 is used to ________________.
A
increase force
B
decrease force
C
change direction
D
increase distance
12) A green plant has _________________ energy.
A
chemical
B
kinetic
C
electrical
D
thermal
*select an answer for all questions
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