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WorksheetsScience boiz
Total questions: 23
Worksheet time: 6mins
Name
Class
Date
1.
What is a force?
a)
a push or pull
b)
speed or acceleration
c)
potential or kinetic energy
d)
balanced or unbalanced force
2.
When objects remain in the same place, it is called...
a)
gravity
b)
friction
c)
balanced force
d)
unbalanced force
3.
When an object has potential energy, it is not moving.
a)
true
b)
false
4.
What is the unit of measurement for the amount of a substance
a)
Volume
b)
Mass
c)
Concentration
d)
Moles
5.
Calculate the molar mass of Magnesium Chloride - MgCl2
a)
71
b)
35.5
c)
59.5
d)
95
6.
Calculate the molar mass of Carbon Dioxide CO2
a)
28
b)
32
c)
16
d)
44
7.
1. A _________is a simple machine with a fulcrum and a rigid bar.
a)
Pivot
b)
Lever
c)
Wedge
8.
We use levers to make work easier?
a)
True
b)
False
9.
What is the unit of force?
a)
Meters
b)
Centimeters
c)
Newtons
10.
If a piece of matter changes shape, what happens to its mass?
a)
It increases
b)
It decreases
c)
it changes randomly
d)
it stays the same
11.
Which of the following is a unit of mass?
a)
kilogram
b)
liter
c)
meter
d)
pound
12.
The mass of an object ___________________________.
a)
changes, depending on where it is located
b)
changes randomly
c)
changes, depending on temperature
d)
does not change
13.
Mass is a property of ___________.
a)
waves
b)
energy
c)
matter
d)
light
14.
After the third half-life, how much of the sample is left?
a)
1/2
b)
1/3
c)
1/16
d)
1/8
15.
If the half-life of uranium-232 is 70 years, how many half-lives will it take for 10 g of it to be reduced to 1.25 g?
a)
1 half-life
b)
2 half-lives
c)
3 half-lives
d)
4 half-lives
16.
The diagram shows 32 atoms
32 of the Red are the parent isotope
0 of the atoms are daughter isotopes
How many half-lives have occurred?
a)
0
b)
1
c)
2
d)
3
17.
What is a magnitude?
a)
A numeric value.
b)
A direction.
18.
Distance
a)
Vector
b)
Scalar
19.
Length
a)
Vector
b)
Scalar
20.
Which symbol is used to show vector quantities?
a)
Circle
b)
Line
c)
Arrow
d)
Triangle
21.
In order of most to least penetrating radiation we have
a)
Alpha , Beta, Gamma
b)
Beta , Gamma , Alpha
c)
Gamma, Beta, Alpha
d)
Gamma, Alpha, Beta
22.
Which type of radiation is the most ionising?
a)
alpha
b)
beta
c)
gamma
23.
Which type of radiation is the least ionising?
a)
alpha
b)
beta
c)
gamma
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