Work and Machines
Name: ______________________ Date: ____________
Write the missing letters on the lines to finish each word.
1.
e
f
f
i
i
Skillfulness in avoiding wasted time and effort
2.
k
i
c
Relating to the motion of material bodies and the forces associated therewith
3.
m
h
n
Any mechanical or electrical device that transmits or modifies energy to perform or assist in
4.
e
f
r
Use of physical or mental energy
5.
c
o
e
a
t
o
The maintenance of a certain quantities unchanged during chemical reactions or physical
6.
i
n
A statement that expresses a personal opinion or belief or adds information
8.
l
e
A rigid bar pivoted about a fulcrum
9.
o
u
u
Production of a certain amount
10.
m
c
h
a
l
Using ___ or tools or devices
11.
w
o
Job or effort to get something done
12.
e
r
y
The power to do work or make things move
13.
p
o
t
a
The difference in electrical charge between two points in a circuit expressed in volts
14.
w
d
A large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese
15.
f
l
r
The pivot about which a lever turns
16.
p
w
Strength or the ability to control things
17.
w
a
A unit of power equal to 1 joule per second
18.
g
r
t
o
Engine that converts mechanical energy into electrical energy by electromagnetic induction
19.
p
u
l
A simple machine consisting of a wheel with a groove in which a rope can run to change
20.
w
e
Forces that provide energy and direction
21.
i
n
n
d
To have a tendency or disposition to do or be something
23.
a
l
A shaft on which a wheel rotates
24.
p
e
An aircraft that has a fixed wing and is powered by propellers or jets