Grade 9 NATURAL SCIENCE Revision
(Term 3) UPDATED ACTUAL Questions
and CORRECT Answers
What is a simple device that opens and closes a circuit? - CORRECT ANSWER - switch
TRUE or FALSE
As a ball rolls along the ground it starts to slow down and stops after a period of time as this is
caused by friction. - CORRECT ANSWER - true
What is the difference between a series circuit and a parallel circuit? - CORRECT
ANSWER - A series circuit has one path; and a parallel circuit splits into two branches.
TRUE or FALSE
If you squeeze an inflated balloon softly between your hands, you will notice that it will get
bigger. - CORRECT ANSWER - false
Electricity generation by falling water is called: - CORRECT ANSWER - Hydroelectricity
TRUE or FALSE
Compression is a contact force that pushes or squeezes an object into a smaller space. -
CORRECT ANSWER - true
What the correct scientific term for a non-contact force? - CORRECT ANSWER - The
force which acts on an object but does not physically come into contact with it.
TRUE or FALSE
A fuse is a device that has a thin strip of metal that will melt and break if the current exceeds a
safe level. - CORRECT ANSWER - true
, What is the correct scientific term for a safety device in a circuit that melts and breaks if the
current exceeds a safe level? - CORRECT ANSWER - a fuse
TRUE or FALSE
When connecting cells in series we connect two negative terminals of one cell. - CORRECT
ANSWER - false
What is the correct scientific term for the flow of electric charge in a circuit? - CORRECT
ANSWER - an electric current
The more cells that you connect, the (greater/lesser) than the voltage is of the battery. -
CORRECT ANSWER - greater
Best describe how lightning occurs: - CORRECT ANSWER - Lightning is the build up of
condensation and friction in between the clouds and creates a surge of electrostatic energy.
A circuit that has only one pathway for the current to flow is called a ________ circuit . -
CORRECT ANSWER - series
TRUE or FALSE
We are able to measure the amps of a resistor by using a volt meter. - CORRECT
ANSWER - false
Current is measure in (ohms/amperes) . - CORRECT ANSWER - amperes
TRUE or FALSE
Resistance is measured in ohms. - CORRECT ANSWER - true
(Term 3) UPDATED ACTUAL Questions
and CORRECT Answers
What is a simple device that opens and closes a circuit? - CORRECT ANSWER - switch
TRUE or FALSE
As a ball rolls along the ground it starts to slow down and stops after a period of time as this is
caused by friction. - CORRECT ANSWER - true
What is the difference between a series circuit and a parallel circuit? - CORRECT
ANSWER - A series circuit has one path; and a parallel circuit splits into two branches.
TRUE or FALSE
If you squeeze an inflated balloon softly between your hands, you will notice that it will get
bigger. - CORRECT ANSWER - false
Electricity generation by falling water is called: - CORRECT ANSWER - Hydroelectricity
TRUE or FALSE
Compression is a contact force that pushes or squeezes an object into a smaller space. -
CORRECT ANSWER - true
What the correct scientific term for a non-contact force? - CORRECT ANSWER - The
force which acts on an object but does not physically come into contact with it.
TRUE or FALSE
A fuse is a device that has a thin strip of metal that will melt and break if the current exceeds a
safe level. - CORRECT ANSWER - true
, What is the correct scientific term for a safety device in a circuit that melts and breaks if the
current exceeds a safe level? - CORRECT ANSWER - a fuse
TRUE or FALSE
When connecting cells in series we connect two negative terminals of one cell. - CORRECT
ANSWER - false
What is the correct scientific term for the flow of electric charge in a circuit? - CORRECT
ANSWER - an electric current
The more cells that you connect, the (greater/lesser) than the voltage is of the battery. -
CORRECT ANSWER - greater
Best describe how lightning occurs: - CORRECT ANSWER - Lightning is the build up of
condensation and friction in between the clouds and creates a surge of electrostatic energy.
A circuit that has only one pathway for the current to flow is called a ________ circuit . -
CORRECT ANSWER - series
TRUE or FALSE
We are able to measure the amps of a resistor by using a volt meter. - CORRECT
ANSWER - false
Current is measure in (ohms/amperes) . - CORRECT ANSWER - amperes
TRUE or FALSE
Resistance is measured in ohms. - CORRECT ANSWER - true
