Download PS 7.8.1 – 7.8.3 TEST

PS 7.8.1 – 7.8.3 TEST
8TH GRADE SCIENCE
1. ELECTRIC CURRENT IS MEASURED IN ______.
A. VOLTS B. CIRCUITS C. AMPERES D. OHMS
2. VOLTAGE DIFFERENCE IS MEASURED IN ______.
A. VOLTS B. CIRCUITS C. AMPERES D. OHMS
3. A CLOSED PATH THAT ELECTRIC CURRENT FOLLOWS
IS A _________.
A. VOLT B. CIRCUIT C. AMPERE D. OHM
4. THE NET MOVEMENT OF ELECTRIC CHARGES IN A
SINGLE DIRECTION IS AN _________.
A. ELECTRIC CIRCUIT B. ELECTRIC CURRENT
C. DRY CELL
D. WET CELL
5. A _____ CAN PROVIDE THE VOLTAGE
DIFFERENCE THAT IS NEEDED TO KEEP
CURRENT FLOWING IN A CIRCUIT.
A.FUSE B. BREAKER C. BATTERY D. OHM
6. ONE ELECTRODE IS THE CARBON ROD, AND
THE OTHER IS THE ZINC CONTAINER.
A.WET CELL B. DRY CELL C. LEAD ACID
7. 2 CONNECTED PLATES MADE OF DIFFERENT
METALS OR METALLIC COMPOUNDS IN A
CONDUCTING SOLUTION.
A. WET CELL B. DRY CELL C. LEAD ACID
8. MOST CAR BATTERIES ARE ___ BATTERIES.
A.DRY CELL B. WET CELL C. LEAD ACID
9. THIS CURRENT HAS ONLY 1 LOOP TO FLOW
THROUGH. THEY ARE USED IN FLASHLIGHTS.
A.OPEN CIRCUIT
B. RESISTANCE
C. SERIES CIRCUIT
D. OHM
10. _____ IS THE TENDENCY FOR A MATERIAL TO
OPPOSE THE FLOW OF ELECTRONS, CHANGING
ELECTRICAL ENERGY INTO THERMAL ENERGY
AND LIGHT.
A. RESISTANCE B. SERIES CIRCUIT C. OHMS LAW
11. THE CURRENT IN A CIRCUIT EQUALS THE
VOLTAGE DIFFERENCE DIVIDED BY THE
RESISTANCE.
A.OPEN CIRCUIT
C. SERIES CIRCUIT
B. OHM’S LAW
D. PARALLEL CIRCUIT
12. RESISTANCE IS MEASURED IN _______.
A.OHMS B. FUSES C. WATTS D. CELLS
13. A BURNED OUT BULB IN THIS CIRCUIT CAN
CAUSE THE WHOLE STRING OF LIGHTS TO GO
OUT.
A. DRY B. PARALLEL C. SERIES D. OPEN
14. THE MAIN SWITCH AND CIRCUIT BREAKER, OR
THE ___________ SERVES AS AN ELECTRICAL
HEADQUARTERS FOR YOUR HOME.
A.FUSE BOX B. DRY CELL C. OPEN CIRCUIT
D. SERIES CIRCUIT
15. THIS CIRCUIT CONTAINS 2 OR MORE
BRANCHES FOR CURRENT TO MOVE THROUGH.
A.OPEN B. FUSE C. PARALLEL D. SERIES
16. THIS CONTAINS A SMALL PIECE OF METAL
THAT MELTS IF THE CURRENT BECOMES TOO
HIGH.
A. WATT B. CIRCUIT C. OHM D. FUSE
17. TOO MANY APPLIANCES IN USE AT THE SAME
TIME IS THE MOST LIKELY CAUSE_____OF THE
CIRCUIT.
A.MORE POWER
C. OVERHEATING
B. WATTAGE
D. CIRCUIT ACTION
18. A ____________ CONTAINS A PIECE OF METAL
THAT BENDS WHEN THE CURRENT IN IT IS SO
LARGE THAT IT GETS HOT.
A.CIRCUIT BREAKER
B. FUSE
C. OHM BREAKER D. PARALLEL CIRCUIT
19. THE UNIT FOR POWER IS THE ______.
A.OHM B. VOLT C. WATT D. CELL
20. THE RATE AT WHICH ELECTRICAL ENERGY IS
CONVERTED TO ANOTHER FORM OF ENERGY IS
THE _____________________.
A.ELECTRIC POWER
C. ELECTRIC OHM
B. KILOWATT HOUR
D. CIRCUIT BREAKER
21. ELECTRICAL ENERGY USUALLY IS MEASURED
IN _____.
A.WATT HOURS
B. KILOWATT HOURS
C. CIRCUIT HOURS
D. FUSE HOURS
22. WHICH OF THE FOLLOWING EQUATIONS IS
USED TO CALCULATE ELECTRIC POWER?
A. V = PI B. V = IP C. I = VP
D. P = IV
23. ONE KILOWATT EQUALS HOW MANY WATTS?
A. 10
B. 100
C. 1000
D. 10,000
1. ELECTRIC CURRENT IS MEASURED IN ______.
C. AMPERES
2. VOLTAGE DIFFERENCE IS MEASURED IN ______.
• A. VOLTS
3. A CLOSED PATH THAT ELECTRIC CURRENT FOLLOWS
IS A _________.
B. CIRCUIT
4. THE NET MOVEMENT OF ELECTRIC CHARGES IN A
SINGLE DIRECTION IS AN _________.
B. ELECTRIC CURRENT
5. A _____ CAN PROVIDE THE VOLTAGE
DIFFERENCE THAT IS NEEDED TO KEEP
CURRENT FLOWING IN A CIRCUIT.
C. BATTERY
6. ONE ELECTRODE IS THE CARBON ROD, AND
THE OTHER IS THE ZINC CONTAINER.
B. DRY CELL
7. 2 CONNECTED PLATES MADE OF DIFFERENT
METALS OR METALLIC COMPOUNDS IN A
CONDUCTING SOLUTION.
A. WET CELL
8. MOST CAR BATTERIES ARE ___ BATTERIES.
C. LEAD ACID
9. THIS CURRENT HAS ONLY 1 LOOP TO FLOW
THROUGH. THEY ARE USED IN FLASHLIGHTS.
C. SERIES CIRCUIT
10. _____ IS THE TENDENCY FOR A MATERIAL TO
OPPOSE THE FLOW OF ELECTRONS, CHANGING
ELECTRICAL ENERGY INTO THERMAL ENERGY
AND LIGHT.
A. RESISTANCE
11. THE CURRENT IN A CIRCUIT EQUALS THE
VOLTAGE DIFFERENCE DIVIDED BY THE
RESISTANCE.
B. OHM’S LAW
12. RESISTANCE IS MEASURED IN _______.
• A. OHMS
13. A BURNED OUT BULB IN THIS CIRCUIT CAN
CAUSE THE WHOLE STRING OF LIGHTS TO GO
OUT.
D. OPEN
14. THE MAIN SWITCH AND CIRCUIT BREAKER, OR
THE ___________ SERVES AS AN ELECTRICAL
HEADQUARTERS FOR YOUR HOME.
A.FUSE BOX
15. THIS CIRCUIT CONTAINS 2 OR MORE
BRANCHES FOR CURRENT TO MOVE THROUGH.
C. PARALLEL
16. THIS CONTAINS A SMALL PIECE OF METAL
THAT MELTS IF THE CURRENT BECOMES TOO
HIGH.
D. FUSE
17. TOO MANY APPLIANCES IN USE AT THE SAME
TIME IS THE MOST LIKELY CAUSE_____OF THE
CIRCUIT.
C. OVERHEATING
18. A ____________ CONTAINS A PIECE OF METAL
THAT BENDS WHEN THE CURRENT IN IT IS SO
LARGE THAT IT GETS HOT.
• A. CIRCUIT BREAKER
19. THE UNIT FOR POWER IS THE ______.
C. WATT
20. THE RATE AT WHICH ELECTRICAL ENERGY IS
CONVERTED TO ANOTHER FORM OF ENERGY IS
THE _____________________.
• A. ELECTRIC POWER
21. ELECTRICAL ENERGY USUALLY IS MEASURED
IN _____.
B. KILOWATT HOURS
22. WHICH OF THE FOLLOWING EQUATIONS IS
USED TO CALCULATE ELECTRIC POWER?
D. P = IV
23. ONE KILOWATT EQUALS HOW MANY WATTS?
C. 1000