Science Test
What does the Law of Conservation of Energy state?
A)Energy can only change form but cannot be created or destroyed.
B)Energy can be created and destroyed.
C)Energy is always lost during transfer.
D)Energy cannot be transferred between objects.
A)Energy can only change form but cannot be created or destroyed.
Which of the following is NOT one of the four fundamental forces in the universe?
A)Electromagnetism
B)Gravity
C)Strong Nuclear Force
D)Friction
D)Friction
What is the primary difference between static electricity and current electricity?
A)Static electricity is caused by friction, while current electricity flows through a conductor.
B)Static electricity involves a continuous flow of charges, while current electricity does not.
C) Static electricity powers devices, while current electricity does not.
D)Static electricity is always alternating, while current electricity is always direct.
A)Static electricity is caused by friction, while current electricity flows through a conductor.
1. What happens to energy during a transfer according to the Law of Conservation of Energy?
A)Some energy may be lost to other forms, such as heat.
B)Energy is always transferred perfectly.
C) Energy is destroyed during transfer.
D)Energy cannot change form.
Some energy may be lost to other forms, such as heat.
What is the purpose of conductive materials in a circuit?
A)To allow electrons to flow easily.
B)To prevent energy loss.
C)To create static electricity.
D)To stop the flow of electrons.
A)To allow electrons to flow easily.
What type of energy is stored in an object and has the potential to move?
A)Kinetic energy
B)Thermal energy
C)Potential energy
D)Electrical energy
Potential energy
What creates a magnetic field?
A)The movement of electrons
B)The movement of protons
C)The movement of neutrons
D)The movement of atoms
A)The movement of electrons
What is the unit used to measure a drop in electrical potential?
A)Amperes
B)Volts
C)Ohms
D)Watts
B)Volts
What type of energy is associated with movement?
A)Potential energy
B)Thermal energy
C)Kinetic energy
D)Electrical energy
C)Kinetic energy
3. Which factor does NOT influence kinetic energy?
A)Speed
B)Mass
C) Height
D)Velocity
C) Height
Which factor does NOT influence potential energy?
A)Height
B)Speed
C)Mass
D)Gravitational force
Speed
Which of the following metals is NOT magnetic?
A)Iron
B)Nickel
C) Copper
D)Cobalt
C) Copper
What is the difference between series and parallel circuits?
A)Series circuits allow bulbs to work independently, while parallel circuits do not.
B) Series circuits use alternating current, while parallel circuits use direct current.
C)Series circuits connect bulbs in a single line, while parallel circuits give each bulb its own connection to the battery.
D)Series circuits are more efficient than parallel circuits.
C)Series circuits connect bulbs in a single line, while parallel circuits give each bulb its own connection to the battery.
Why do parallel circuits allow bulbs to work independently?
A) Parallel circuits prevent energy loss.
B)Each bulb has its own connection to the battery. Wrong: Parallel circuits use more energy.
C)Parallel circuits have stronger magnetic fields.
B)Each bulb has its own connection to the battery. Wrong: Parallel circuits use more energy.
What is electromagnetism?
A)The force that occurs between neutral particles.
B) The force that occurs between electrically charged particles.
C)The force that occurs between atoms.
D)The force that occurs between protons and neutrons.
B) The force that occurs between electrically charged particles.
Why must the first hill of an old-fashioned roller coaster be taller than the following obstacles?
A)To ensure the roller coaster gains enough kinetic energy to overcome friction.
B)To make the ride more thrilling.
C)To prevent the roller coaster from stopping due to gravity.
D)To reduce the transfer of energy to heat.
to ensure the roller coaster gains enough kinetic energy to overcome friction.
Where is a magnet's strongest attractive force found?
A)At its poles
B)At its center
C)Evenly distributed across its surface
D)At its edges
A)At its poles
14. Why are metals generally good conductors of electricity?
A)They have high melting points.
B)They allow electrons to flow easily.
C)They are malleable and ductile.
D)They are magnetic.
B)They allow electrons to flow easily.
What are the three magnetic metals?
A)Iron, nickel, and cobalt
B)Copper, aluminum, and silver
C)Gold, platinum, and zinc
D)Steel, brass, and lead
A)Iron, nickel, and cobalt
What is the connection between electricity and magnetism?
A)Electricity and magnetism are completely separate forces.
B)Magnetism only occurs in the absence of electricity.
C)Electricity is stronger than magnetism.
D)A changing electric field creates a magnetic field, and vice versa.
D)A changing electric field creates a magnetic field, and vice versa.
What are the two umbrella terms under which all types of energy can be classified?
A)Potential and kinetic energy
B) Thermal and electrical energy
C)Mechanical and chemical energy
D)Nuclear and magnetic energy
Potential and kinetic energy
What is static electricity?
A)The continuous flow of electric charges through a conductor
B)The movement of electrons in a circuit
C)The buildup of electric charges on an object's surface
D)The transfer of energy through electromagnetic waves
C)The buildup of electric charges on an object's surface
What happens when a battery is 'dead' or 'drained'?
A)The chemical reaction in the battery can no longer provide enough volts to push electrons through the circuit.
B) The electrons in the battery stop moving.
C)The battery loses its magnetic field.
D)The battery overheats and melts.
The chemical reaction in the battery can no longer provide enough volts to push electrons through the circuit.
What is the primary difference between Direct Current (DC) and Alternating Current (AC)?
A)DC is used in homes, while AC is used in devices.
B)DC is stronger than AC.
C)AC flows in one direction, while DC changes direction periodically.
D) DC flows in one direction, while AC changes direction periodically.
D) DC flows in one direction, while AC changes direction periodically.
Why does a moving object eventually come to a stop?
A)Energy is lost as heat due to friction.
B)Energy is destroyed during motion.
C)Kinetic energy cannot be transferred.
D) Potential energy increases over time.
A)Energy is lost as heat due to friction.