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WorksheetsMidterm Q2 Exam Review 2020
Total questions: 10
Worksheet time: 5mins
Which best describes a difference between electric current and static electricity?
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Electric current is continuous, and static electricity is not continuous.
Static electricity is continuous, and electric current is not continuous.
Electric current involves the movement of electrons, and static electricity involves the movement of protons.
Static electricity involves the movement of electrons, and electric current involves the movement of protons.
A circuit is a path along which electric current flows. How would changing the battery in a circuit from 9 volts to 1.5 volts most likely affect the circuit?
More electric charge would flow in the circuit.
Less electric charge would flow in the circuit.
The resistance in the circuit would decrease.
The resistance in the circuit would increase.
Samantha is observing a salt crystal under a microscope. She wants to view more details by enlarging the image of the crystal. Which would allow her to do this?
increasing the amount of light that shines on the crystal
decreasing the amount of light that shines on the crystal
increasing the strength of the objective lens
decreasing the strength of the objective lens
Which best explains how fiber-optic technology benefits the field of medicine?
It allows doctors to view internal body structures to help them diagnose illnesses.
It helps surgeons make more accurate repairs to broken blood vessels.
It allows doctors to magnify cells so they can identify unhealthy cells that cause cancer.
It helps surgeons make cuts that are smaller and less painful than traditional methods.
What happens when someone lets go of the button on an electric doorbell?
The electromagnet gets stronger.
The circuit is broken and the electromagnet turns off.
The current moving through the circuit changes direction.
The metal striker hits the bell.
Which most likely uses only alternating current?
Which wave is carrying the most energy?
Farah is doing an experiment that involves calculating the speed of a longitudinal wave. What will most likely happen if she increases the temperature in the room?
The amplitude of the wave will increase.
The amplitude of the wave will decrease.
The speed of the wave will increase.
The speed of the wave will decrease.
Two objects are held close together. When they are released, they move toward one another. Which conclusion is supported by this evidence?
The objects are both positively charged.
The objects are both negatively charged.
The objects have no charge.
The objects have opposite charges.
Which change will decrease the electric force between two positively charged objects?
moving them closer together
moving them farther apart
adding neutrons
removing electrons
