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PS 7.8.1 – 7.8.3 TEST

PS 7.8.1 – 7.8.3 TEST. 8TH GRADE SCIENCE. ELECTRIC CURRENT IS MEASURED IN ______. VOLTS B. CIRCUITS C. AMPERES D. OHMS 2. VOLTAGE DIFFERENCE IS MEASURED IN ______. VOLTS B. CIRCUITS C. AMPERES D. OHMS 3. A CLOSED PATH THAT ELECTRIC CURRENT FOLLOWS IS A _________.

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PS 7.8.1 – 7.8.3 TEST

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  1. PS 7.8.1 – 7.8.3 TEST 8TH GRADE SCIENCE

  2. ELECTRIC CURRENT IS MEASURED IN ______. • VOLTS B. CIRCUITS C. AMPERES D. OHMS • 2. VOLTAGE DIFFERENCE IS MEASURED IN ______. • VOLTS B. CIRCUITS C. AMPERES D. OHMS • 3. A CLOSED PATH THAT ELECTRIC CURRENT FOLLOWS IS A _________. • VOLT B. CIRCUIT C. AMPERE D. OHM • 4. THE NET MOVEMENT OF ELECTRIC CHARGES IN A SINGLE DIRECTION IS AN _________. • ELECTRIC CIRCUIT B. ELECTRIC CURRENT • C. DRY CELL D. WET CELL

  3. 5. A _____ CAN PROVIDE THE VOLTAGE DIFFERENCE THAT IS NEEDED TO KEEP CURRENT FLOWING IN A CIRCUIT. • FUSE B. BREAKER C. BATTERY D. OHM • 6. ONE ELECTRODE IS THE CARBON ROD, AND THE OTHER IS THE ZINC CONTAINER. • 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

  4. 8. MOST CAR BATTERIES ARE ___ BATTERIES. • DRY CELL B. WET CELL C. LEAD ACID • 9. THIS CURRENT HAS ONLY 1 LOOP TO FLOW THROUGH. THEY ARE USED IN FLASHLIGHTS. • 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

  5. 11. THE CURRENT IN A CIRCUIT EQUALS THE VOLTAGE DIFFERENCE DIVIDED BY THE RESISTANCE. • OPEN CIRCUIT B. OHM’S LAW • C. SERIES CIRCUIT D. PARALLEL CIRCUIT • 12. RESISTANCE IS MEASURED IN _______. • 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

  6. 14. THE MAIN SWITCH AND CIRCUIT BREAKER, OR THE ___________ SERVES AS AN ELECTRICAL HEADQUARTERS FOR YOUR HOME. • FUSE BOX B. DRY CELL C. OPEN CIRCUIT • D. SERIES CIRCUIT • 15. THIS CIRCUIT CONTAINS 2 OR MORE BRANCHES FOR CURRENT TO MOVE THROUGH. • 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

  7. 17. TOO MANY APPLIANCES IN USE AT THE SAME TIME IS THE MOST LIKELY CAUSE_____OF THE CIRCUIT. • MORE POWER B. WATTAGE • C. OVERHEATING D. CIRCUIT ACTION • 18. A ____________ CONTAINS A PIECE OF METAL THAT BENDS WHEN THE CURRENT IN IT IS SO LARGE THAT IT GETS HOT. • CIRCUIT BREAKER B. FUSE • C. OHM BREAKER D. PARALLEL CIRCUIT

  8. 19. THE UNIT FOR POWER IS THE ______. • OHM B. VOLT C. WATT D. CELL • 20. THE RATE AT WHICH ELECTRICAL ENERGY IS CONVERTED TO ANOTHER FORM OF ENERGY IS THE _____________________. • ELECTRIC POWER B. KILOWATT HOUR • C. ELECTRIC OHM D. CIRCUIT BREAKER • 21. ELECTRICAL ENERGY USUALLY IS MEASURED IN _____. • WATT HOURS B. KILOWATT HOURS • C. CIRCUIT HOURS D. FUSE HOURS

  9. 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

  10. 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

  11. 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

  12. 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

  13. 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. 14. THE MAIN SWITCH AND CIRCUIT BREAKER, OR THE ___________ SERVES AS AN ELECTRICAL HEADQUARTERS FOR YOUR HOME. • 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

  15. 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

  16. 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

  17. 22. WHICH OF THE FOLLOWING EQUATIONS IS USED TO CALCULATE ELECTRIC POWER? D. P = IV 23. ONE KILOWATT EQUALS HOW MANY WATTS? C. 1000

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