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WorksheetsT3 Summative Assessment CP
Total questions: 25
Worksheet time: 50mins
An electromagnetic wave is a type of _____ wave
transverse
longitudinal
Which of the following types of electromagnetic wave has the highest frequency?
Radio
Microwave
Visible Light
X-Ray
Which of the following best explains why, during a thunder and lightning storm, you see the lightning before hearing the thunder?
Electromagnetic waves move faster than mechanical waves.
Mechanical waves move faster than electromagnetic waves.
When astronauts speak to each other in space while outside their spaceship, they use radio headsets that rely on electromagnetic waves. Which of the following best explains why radio headsets are used by astronauts to speak with each other in space?
Electromagnetic waves can travel in a vacuum.
Electromagnetic waves are difficult to distort.
Electromagnetic waves travel quickly through air.
Electromagnetic waves require little energy to generate.
Which of the following diagrams shows how a light ray reflects off a mirror?
Which of the following is shown in the picture?
Opacity
Static Electricity
Reflection
Refraction
The diagram shows two electric charges, –q and +q, separated by a distance, d. What happens to the electric force between the charges if the magnitude of each charge is doubled?
It becomes 16 times less
It becomes 2 times less
It becomes 4 times greater
It becomes 8 times greater
Which of the following pairs of charges has the greatest attractive force?
Negatively charged plastic rods are brought near a plastic sphere and a metal sphere without touching the spheres. Which of the following diagrams best illustrates the resulting distribution of the negative charges on the two spheres?
The diagram shows a negatively charged particle traveling toward two parallel charged plates. What will most likely happen to the negatively charged particle when it travels between the charged plates?
Its path will bend upward toward the negatively charged plate.
Its path will bend downward toward the positively charged plate.
What is the primary difference between insulators and conductors?
Electrons are present in insulators but not in conductors.
Electrons are present in conductors but not in insulators.
Electrons are free to move in insulators but not in conductors.
Electrons are free to move in conductors but not in insulators.
When an uncharged balloon is rubbed against dry uncharged hair, electrons move from the hair onto the balloon’s surface. Which table lists the charges of the balloon and the hair after they are moved apart?
The picture shows shavings of iron metal surrounding a bar magnet. They seem to arrange themselves in the same shape as...
Magnetic field lines
Electrostatic force
Gravitational force
Magnetic domains
Identify what needs to be done in this picture to produce a voltage in the wire.
Spin the magnet in circles rapidly
Move the magnet in and out of the coil repeatedly
Heat the wires
Touch the magnet to the wires.
What happens to a compass if it is placed in close proximity to a bar magnet?
The compass spins out of control and breaks in half.
The compass experiences a voltage.
The compass is deflected by the magnet as it no longer feels the pull of the Earth's magnetism.
The compass explodes.
Which of the following describes how an electric motor works?
A current-carrying coil of wire is placed in a magnetic field and begins to spin, powering a tool.
A source of mechanical energy rotates a coil of wire through a magnetic field to produce electricity.
How much voltage is needed to produce a current of 6.0 A through a 24 Ω resistor?
4 V
144 V
18 V
30 V
A machine uses a current of 5.0 A when it is attached to a 20 V source. What is the resistance in the machine?
0.25 Ohms
1.25 Ohms
4.0 Ohms
15.0 Ohms
Which of the following circuit components represents a power source?
Which is the function of a resistor in a circuit?
to disconnect the wires
to decrease the temperature
to limit the amount of current
to increase the amount of voltage
Which of the following circuits has the greatest current?
Select the parallel circuit
What is the total resistance of the circuit that is pictured?
3 Ohms
1 Ohm
9 Ohms
4 Ohms
What is the total current in the circuit pictured?
10 A
4 A
6.66 A
400 A
What happens if path C in the circuit shown is broken?
The whole circuit shuts off
Only light bulb C turns off
