Energy (4%) Flashcards
When you build up static electricity by dragging your feet, what causes the spark when you shock one of your friends?
(A) lightning (B) protons being transferred (C) neutrons being transferred (D) electrons being transferred (E) electricity from the air
(D) electrons being transferred
Which of the following is measure of the amount of current?
(A) voltage (B) amperage (C) resistance (D) magnetism (E) none of the above
(B) amperage
Which of the following elements is not naturally magnetic?
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A) Co (Cobalt
(B) He (Helium)
(C) Fe (Iron)
(D) Ni (Nickel)
(E) they are all naturally magnetic
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(B) He (Helium)
Which of the following are examples of longitudinal waves?
(A) earthquakes (B) ocean waves (C) sound waves (D) they all are examples of longitudinal waves (E) a and c
(E) A (earthquakes) and C (sound waves).
Reason: Earthquake waves under Earth’s surface also have both longitudinal and transverse components (called compressional or Pwaves and shear or S-waves, respectively).
Which of the following types of electromagnetic radiation has photons of the LEAST energy?
(A) Visible light (B) Ultraviolet light (C) Microwaves (D) Gamma radiation (E) Radio waves
(E) Radio waves
This describes electrons that are gathered on the surface of an object.
(A) Static electricity
(B) Electrical current
(C) Electrical charge
(D) Conduction
(C) Electrical charge
When surface electrons are not in motion, this is called
(A) Static electricity
(B) Electrical current
(C) Electrical charge
(D) Conduction
(A) Static electricity
Electrons can flow as an electrical current through substances called
(A) Insulators
(B) Conductors
(C) Open circuits
(D) Closed circuits
(B) Conductors
Some materials, like most metals, are good conductors. Other materials, like plastic, rubber, glass, and wood are very poor conductors; they are called
(A) Conductors
(B) Insulators
(C) Circuits
(D) Voltage
(B) Insulators
An electrical current follows a path called a
(A) Conductor
(B) Insulator
(C) Circuit
(D) Voltage
(C) Circuit
Every circuit has 4 parts:
- Source of charge, or voltage
- A set of conductors
- A load
- A switch
A circuit may be _____, and have a continuous path for the flow of electrons. A _____ open circuit has an inhibited flow of electrons due to the path being interrupted, either by a switch or disconnection.
(A) Open, closed
(B) Closed, open
(B) Closed, open
_____ is the electromotive force that pushes the electrons through the circuit.
(A) Voltage
(B) Amperage
(C) Resistance
(D) Magnetism
(A) Voltage
_____ is hindrance to a current, which can arise from a number of causes.
(A) Voltage
(B) Amperage
(C) Resistance
(D) Magnetism
(C) Resistance
In a _____, there is only 1 path for the current to travel along. Linking them together in a series results in the total voltage of the circuit being equal to the sum of all of the voltages in each cell.
(A) Closed circuit
(B) Open circuit
(C) Series circuit
(D) Parallel circuit
(C) Series circuit
In a _____, there are multiple paths for the current to travel along. Linking them together in a series results in an increase in the total amperage of the circuit, with the current being equal to the sum of all of the currents in each cell.
(A) Closed circuit
(B) Open circuit
(C) Series circuit
(D) Parallel circuit
(D) Parallel circuit
