Download Blank filing exercise on "Electric Current"

Blank filling exercise on "Electric Current"
Hint: Read first the concept map in the last page.
1.
2.
3.
4.
5.
6.
7.
8.
An electric current is the flow of __________.
In a metal, an electric current is the flow of free __________.
An electric current can flow through a __________.
An electric current cannot flow through an __________.
An electric current flows in a __________ circuit.
An electric current flows in a completed __________.
No electric current can flow in an __________ circuit.
We can turn an electric current on and off easily using a __________.
9. An electric current goes along only one path in a __________ circuit.
10. An electric current divides into branches in a __________ circuit.
11. A large electric current will flow if there is a __________ circuit.
12.
13.
14.
15.
16.
17.
18.
An electric current makes a light __________ glow.
An electric current produces a __________ effect in a __________.
The electric current gets smaller with a larger __________.
We measure electric current using an __________.
An electric current has the unit __________.
If the electric current is too large, the __________ melts and breaks the circuit.
An electric current produces a __________ field near the wire.
19.
20.
21.
22.
When an electric current flows through a coil, we get an __________.
An electric current makes a __________ turn.
When an electric current flows in an __________, a chemical effect is observed.
When a cell delivers an electric current, __________ energy changes into
__________ energy.
Key
(There may be more than one answer in some cases.)
1.
2.
3.
4.
5.
6.
7.
8.
An electric current is the flow of charges.
In a metal, an electric current is the flow of free electrons.
An electric current can flow through a conductor.
An electric current cannot flow through an insulator.
An electric current flows in a closed circuit.
An electric current flows in a completed circuit.
No electric current can flow in an open circuit.
We can turn an electric current on and off easily using a switch.
9. An electric current goes along only one path in a series circuit.
10. An electric current divides into branches in a parallel circuit.
11. A large electric current will flow if there is a short circuit.
12.
13.
14.
15.
16.
17.
18.
An electric current makes a light bulb glow.
An electric current produces a heating effect in a resistor.
The electric current gets smaller with a larger resistance.
We measure electric current using an ammeter.
An electric current has the unit ampere.
If the electric current is too large, the fuse melts and breaks the circuit.
An electric current produces a magnetic field near the wire.
19.
20.
21.
22.
When an electric current flows through a coil, we get an electromagnet.
An electric current makes a motor turn.
When an electric current flows in an electrolyte, a chemical effect is observed.
When a cell delivers an electric current, chemical energy changes into electrical
energy.
Concept Map on "Electric Current"
Procedure
Make as many sentences as possible to show how you can relate the concept 'electric
current' with other concepts learnt in this unit.
Hint: Do the blank filling exercise on "Electric Current" first.
conductors and insulators
simple circuit
open circuit
insulator
closed circuit
switch
conductor
free electrons
series circuit
charges
parallel circuit
cell
short circuit
chemical
energy
ammeter
electric current
chemical effect
electrolyte
ampere
motor
resistor
electromagnet
heating effect
magnetic field
resistance
fuse
magnetic effect
light energy
bulb
heating effect