WorksheetsScience 9 Unit D Chapter 2 Quiz
Total questions: 24
Worksheet time: 6hrs 0mins
The Doctor needs to complete a circuit to save the earth (again). As her capable companion, you have been carrying around a rubber tube, a glass rod, a copper wire, and a wooden stick for just this possible scenario. You hand The Doctor copper wire because ...
Copper can create current
Copper provides the best resistance
Copper is flexible
Copper is a good electrical conductor
Upon completing the circuit and saving the earth, The Doctor thanks you for not choosing the other materials, which she refers to as “insulators”. Which of the following statements is true about insulators?
Insulators allow current to flow when voltage is applied
Electrons in insulators are not tightly bound to the nuclei
Electrons in insulators are tightly bound to the nuclei
Insulators do not have any electrons
As you and The Doctor begin to walk away from yet another successful mission, you notice that the copper wire becomes warm. The Doctor tells you not to worry and explains that this is most likely caused by
Energetic protons giving off heat
The current causing the wire to vibrate
Heat transfer from the lamp in the circuit
The wire providing some resistance to current flow
Mrs. Bolger wants to question Mr. LaDuke about what makes him such an excellent student teacher and hooks him up to a lie detector. A lie detector would indicate Mr. LaDuke is lying and hiding all his secrets if …
There is a decrease in resistance
There is an increase in resistance
There is no change in conductivity
There is a decrease in conductivity
The microwave in Mr. Maruyama’s classroom provides 16 Ω of total resistance in its circuitry. The microwave is connected to a 240 V outlet. How much current is the microwave drawing in?
0.07 A
15 A
240 A
3600 A
Mr. Maruyama’s homeroom takes a class field trip into Banff National Park and finds a waterfall. Recalling Mr. LaDuke’s lessons, they remember that they can use a waterfall to model the flow of electricity. Which of the following would be the best representation of voltage?
Rocks in the path of the water
The height of the waterfall
The amount of water flowing
The size of the splash at the bottom of the waterfall
Hiking to the top of the waterfall, 9M sees multiple very large boulders. Thinking back on the waterfall analogy once more, they remember that rocks represent …
Voltage
Current
Amperage
Resistance
Superman recently heard that somebody thought a superconductor was just him dressed in a conductor’s uniform. Seeking to educate the public, he presents them with an example of a superconductor. Which of the following would Superman present?
A piece of metal in boiling water
A piece of metal at room temperature
A piece of metal at -30 °C
A piece of metal at almost absolute zero temperature
Abdulrahmman wants to power his new chess simulation machine with the most efficient wires possible so he can continue to play chess in class. Which of the following is the best wire to use?
A wire that is narrow and long
A wire that is wide and long
A wire that is narrow and short
A wire that is wide and short
Recalling her time as an electron in Mr. LaDuke’s demonstration, Rashaa tries to explain what happens to the resistance of a conductor as temperature increases. Which of the following is true?
As the temperature increases, the resistance decreases
As the temperature increases, the resistance stays the same
As the temperature increases, the resistance increases
As the temperature increases, the resistance changes based on environmental conditions
Mr. Maruyama’s class lives in a time where they have access to countless amazing technologies. Which of the following components would they be likely to find in their Chromebooks, but not an old toaster or rotary phone?
Transistor
Resistor
Fuse
Switch
The ghost of Georg Simon Ohm appears in Mr. Maruyama’s class to see if his work was remembered. Which of the following would you recite as a statement of Ohm’s Law to impress him?
If the temperature remains constant, current is less than the voltage applied
If the temperature remains constant, current is greater than the voltage applied
If the temperature remains constant, current is directly proportional to the voltage applied
If the temperature is constant, current in a circuit is independent of the voltage
After creating his image of a truck for Mr. LaDuke’s Circuit Simulation Activity, Rayyan is inspired to take apart a toy truck that has two headlights and a resistor and is powered by a single cell. Upon careful analysis, he draws the schematic to the left for the circuit.
In testing the toy, Rayyan notes that taking out one of the bulbs would cause the other bulb to go out. This is because…
The bulbs are connected in parallel with each other
The bulbs are connected in series with each other
The motor draws too much current when a bulb is disconnected
No current in the circuit can flow when the bulb is disconnected
Voltage is the potential difference across two points. Many electricians refer to the potential difference across a resistor or device as …
Micrometer
Voltage Drop
Resistance
Voltmeter
Just like 9M is made up of many wonderful different people, a circuit can be made up of many different parts. The component that controls the flow of electricity is the …
(Energy) Source
Conductor
Switch
Load / Resistor
The schematic diagram to the left is …
A Series Circuit
A Parallel Circuit
Both a Series and Parallel Circuit
Neither a Series nor Parallel Circuit
What happens to electrons in a conductor when a voltage is applied?
The electrons flow toward the negative terminal of the source
The electrons drift away from the nuclei and float around in all directions
The electrons flow toward the positive terminal of the source
The electrons flow back and forth between the positive and negative terminals of the voltage source
Some lights are controlled by dials rather than by switches. These dials are called dimmer switches and turning the dial controls the brightness of the light. This type of device is called a
Resistor
Conductor
Controller
Rheostat
Mr. Maruyama asks you to measure the electric current passing through the circuit that charges his iPad. Which device would you use to carry out this task?
A Voltmeter
An Ammeter
An Ohmmeter
A Current Detector
Electricians often use multimeters in their work. What is the advantage of these devices over other meters?
Multimeters give more accurate readings than other meters
Multimeters are cheaper to purchase than other meters
Multimeters are capable of measuring voltage, current, and resistance
Multimeters can measure current in both amps (A) and milliamps (mA)
In the circuit shown on the left, the load would be the
Wire
Lamp
Motor
Battery
When shopping for a set of holiday lights, you see this image on the package. This is a diagram of
A Closed Series Circuit
A Closed Parallel Circuit
An Open Series Circuit
A Closed Series Circuit
The diagram on the left is a schematic drawing of a circuit consisting of four switches and three bulbs. If switches A and C are closed, and switches B and D are opened, then
None of the bulbs will light up
Only Bulb 2 will light up
Bulbs 2 and 3 will light up
Bulbs 1 and 3 will light up
Mohamad wants to be an engineer. To practice, he sets up a series circuit with a 9-V battery and four small flashlight bulbs. When he adds a fifth flashlight bulb, he notices that the other four are now dimmer. This is because
Each additional bulb increases resistance, increasing the voltage in the circuit
Each additional bulb increases resistance, reducing the current in the circuit
Each additional bulb decreases resistance, reducing the current in the circuit
Each additional bulb decreases resistance, increasing the voltage in the circuit.
