WorksheetsMoments Topic Retrieval 3
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
1. A _________is a simple machine with a fulcrum and a rigid bar.
a)
Pivot
b)
Lever
c)
Wedge
2.
We use levers to make work easier.?
a)
True
b)
False
3.
Unit of force.
a)
Meter
b)
Centimeter
c)
Newton
4.
What is the moment produced by the 15 N?
a)
15 Nm (clockwise)
b)
150 Nm (anti - clockwise)
c)
1.5 Nm (anti - clockwise)
d)
0.15 Nm (clockwise)
5.
2. The place where a lever pivots is called the _______.
a)
Pivot point
b)
Tissue
c)
Fulcrum
6.
The hotter an object the more infrared radiation is given off (T/F).
a)
True
b)
False
7.
Infrared Radiation is absorbed...
a)
by the internal layers of an object
b)
at the surface of an object
c)
as it is transmitted throughout the object
d)
by a vacuum
8.
As an object becomes higher in temperature the peak of the intensity of the wavelengths radiated by the object...
a)
stays the same
b)
moves towards the visible range of wavelengths
c)
moves towards the Gamma Ray range of wavelengths
9.
Why do ice cubes float in a glass of water?
a)
the ice cubes are more dense than the water
b)
the water is more dense than the ice cubes
c)
the water is more dense than the glass
d)
the ice is more dense than the glass
10.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
100 %
