Checkpoint Quiz #2

According to the Law of Charge Conservation:

Any charge can be destroyed or created.

All net charges are a result of molecular interactions in the atomic core.

The only way to change the net charge of a system is to bring in charge from elsewhere, or remove charge from the system.

If you double the distance between two electrons, then the force between them is:

Increased by a factor of two

Decreased by a factor of two

Increased by a factor of four

Decreased by a factor of four

The rate at which charge flows per second is called

Charge

Power

Current

Voltage

Wood is known as a _____, while iron is known as a ________.

Insulator; conductor

Conductor; insulator

Insulator; insulator

Conductor; conductor

When electrons are spinning in the same direction, they form a:

Bond

Charge

Magnetic field

If the north pole of one magnet is brought near the north pole of another magnet, they will ____ each other.

Repel

Attract

True or False: Not all magnets have both a north pole and a south pole.

True

False

Which of the following will produce the strongest magnetic field?

Three north pole facing magnets bundled with two south pole facing magnets

Three south pole facing magnets bundled with two north pole facing magnets

Five north pole facing magents

One north pole facing magnet bundled with four south pole facing magnets

Electrons move in an electrical circuit

By being bumped by other electrons.

By colliding with molecules.

By interacting with an established electric field.

Because the wires are so thin.

A circuit is powered with a battery. Charge flows

Out of the battery and into the circuit.

From the negative battery terminal to the positive terminal.

Only after a couple seconds pass.

Through both the battery and the rest of the circuit.

The current through a 10-ohm resistor connected to a 120-V power supply is

1 A.

10 A.

12 A.

120 A.

Modern automobile headlights are connected in

Parallel

Perpendicular

Series

When two 1-ohm resistors are connected in series, their combined resistance is

1 ohm, and when connected in parallel, 2 ohms.

2 ohms, and when in parallel, 1 ohm.

1/2 ohm, and when in parallel, 2 ohms.

2 ohms, and when in parallel, 1/2 ohm.

In a simple circuit containing a bulb, energy is given to the moving charges by

The bulb

The wires

A generator

Which of the following will affect the period of a pendulum?

Mass

Length

Amplitude

If a pendulum swings back and forth at 0.2 vibrations a second, then its frequency and period are:

2 Hz and 2 seconds

2 Hz and 20 seconds

0,2 Hz and 2 seconds

0.2 Hz and 20 seconds

Ocean waves move up and down at 5 times a second and have a distance between them of 3 m. What is its frequency (F), wavelength (wl), and wave speed (ws)?

F = 3 Hz, wl = 5 m, ws = 1.67 m/s

F = 3 Hz, wl = 5 m, ws = 15 m/s

F = 5 Hz, wl = 3 m, ws = 0.6 m/s

F = 5 Hz, wl = 3 m, ws = 15 m/s

These waves travel parallel to wave oscillations.

Transverse

Longitudinal

Tangental

In constructive interference, when two waves meet:

They cancel each other out

They add together

They move through and do not affect one another

Electromagnetic waves:

Involve moving material

Cannot travel in a vacuum

Cannot travel through a solid

Involve oscillating fields

Which of the following can sound not travel in?

Solid

Liquid

Gas

Vacuum

When you halve the wavelength, the frequency will:

Half

Double

Triple

Quadruple

Which of the following has the lowest frequency?

Microwave Waves

Ultraviolet Waves

Radio Waves

Gamma Waves

What image does an object located between a convex lens and its focal point produce?

A real image that is right-side up

A real image that is upside down

A virtual image that is right-side up

A virtual image that is upside down

Uranium-235, uranium-238 and uranium-239 are different

Elements.

Ions.

Isotopes.

The fact that the speed of light never changes no matter your frame of reference is a direct implication of:

The Theory of Gravity

The Theory of Relativity

The Theory of Matter

The Theory of Light

In both fission and fusion, mass

Is created from energy of other forms.

Is converted to kinetic energy.

Remains the same.

If you cut an object in half, then its energy will be:

Cut in half

Doubled

Cut by a quarter

Quadrupled

Which process is used by the sun to produce energy?

Fission

Fusion

Radiation

Conduction

When a blinking light source moves relative to you, the speed of the light

Changes but its frequency remains constant.

Remains constant but its frequency can change.

Stays the same, as does its frequency.

Checkpoint Quiz #2

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