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WorksheetsYear 8: Force and Extension
Total questions: 20
Worksheet time: 3600secs
An elastic material can change shape when ________ is exerted on it.
a force
a moment
an acceleration
If tension is applied, the object may be stretched.
We say the object has been __________.
compressed
extended
twisted
If a compression force is applied, the object may be squashed. We say the object has been __________.
compressed
extended
twisted
A deformation is a change in _________.
speed
shape
direction
Which equation could be used to calculate the extension of an object?
extension = stretched length × original length
extension = stretched length ÷ original length
extension = stretched length + original length
extension = stretched length – original length
What is the extension of the spring?
6 cm
9 cm
3 cm
2 cm
Which materials do not break easily and return to their original shape when forces acting on them are removed?
Elastic
Strong
Plastic
Brittle
Robert Hooke investigates springs by seeing how a load affected their.....
extension
correlation
temperature
energy
Hooke's Law does not apply if....
the spring is stretched too far
the spring is compressed
the spring is not made of steel
masses are used instead of weights
The elastic limit is the point at which ..
the spring does not return to its original size
the spring snaps
there is no more room to attach masses
the spring unravels
The variable you change on purpose during an experiment is called the...
Independent variable
Dependent variable
Control variable
The result you measure each time you carry out an experiment is called the...
Dependent variable
Independent variable
Control variable
A variable you keep the same each time you carry out an experiment is called the...
Independent variable
Dependent variable
Control variable
The independent variable is force applied to the spring, and the dependent variable is extension of the spring.
Which variable should you record in the left-hand column of the table?
extension of the spring (m)
force applied to the spring (N)
The independent variable is force applied to the spring,
and the dependent variable is extension of the spring.
Which variable should you record in the
right-hand column of the table?
extension of the spring (m)
force applied to the spring (N)
Describe the relationship between the variables for the line in blue.
The extension is directly proportional
to the force applied
The extension increases at
an increasing rate as force is increased
The extension decreases as force is applied
Describe the relationship between the variables for the line in brown.
The extension is directly proportional
to the force applied
The extension increases at
an increasing rate as force is increased
The extension decreases as force is applied
Suggest what material the
line in brown could be for?
spring
rubber band
polythene strip
(plastic bag strip)
Suggest what material the
line in blue could be for?
spring
polythene strip
(plastic bag strip)
rubber band
Suggest what material the
line in green could be for?
spring
rubber band
polythene strip
(plastic bag strip)
