G9S1M2 REvision

Quiz
•
Science
•
9th Grade
•
Medium
T. Rodolfo
Used 15+ times
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The diagram shows two light, silver-coated balls labeled X and Y hanging from threads near to each other.
Which line identifies the possible charges on X and Y?
X- neutral
Y - neutral
X- negative
Y - negative
X- negative
Y - positive
X- positive
Y - negative
Answer explanation
Law of Charges:
Like charges repel
Unlike charges attract
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A student wants to charge up some rods by rubbing them with a cloth made from a suitable material.
He has a number of rods to choose from: a copper rod, a PVC rod, an aluminium rod and a glass rod.
Which two of the rods would hold a charge when rubbed with an appropriate cloth?
Aluminium and PVC
Glass and Copper
Aluminium and Copper
Glass and PVC
Answer explanation
Charging by Friction is only possible for INSULATORS.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A PVC (plastic) rod is rubbed with a nylon cloth. This process causes electrons to be transferred between the rod and the cloth, causing both objects to become charged.
Which of the rows in the table correctly gives the nature of the charges on both the cloth and the rod, and the effect the objects have on each other after becoming charged?
Charges on rod and cloth (the same)
effect (repel)
Charges on rod and cloth (the same)
effect (attract)
Charges on rod and cloth (opposite)
effect (repel)
Charges on rod and cloth (opposite)
effect (attract)
Answer explanation
Charging both INSULATORS will always create oppositely charged object. Which makes both objects attracted to each other.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the definition of an electric field?
A region in space in which a mass experiences a force due to the Earth’s mass.
A region in space through which electromagnetic radiation is passing.
A region in space in which a compass needle experiences a force.
A region in space in which an electric charge experiences a force.
Answer explanation
Electric field is very similar to gravitational field. You cannot see it, but you can feel its effect on objects.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A student rubs a polythene rod with a cloth, giving it a negative charge. She then holds it near an earthed, conducing sphere as shown in the diagrams below.
Which of the diagrams shows the correct distribution of charges on the conducting sphere?
Answer explanation
The positive charges goes near the negatively charged rod while the electrons are discharged to the earth.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The student then holds the plastic rod near a stream of water coming from a tap. The stream of water bends towards the plastic rod.
Which pictures below show the correct arrangement of charges in the stream of water?
Answer explanation
The positve charges in the stream of water are attracted to the negatively charged rod, therfore it bends towards the rod.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following pairs of charges shows the correct electric force between them?
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