NEW
Font size
WorksheetsChapter 3 Assignment
Total questions: 50
Worksheet time: 25mins
What particles make up the atomic structure?
Protons, electrons, neutrons
Protons, molecules, atoms
Neutrons, atoms, elements
Molecules, compounds, protons
What is the smallest particle of an element or compound?
Atom
Molecule
Proton
Electron
What state of matter has particles held together in a rigid structure?
Gas
Liquid
Solid
Plasma
How can matter change states?
By adding or removing pressure
By adding or removing electricity
By adding or removing heat
By adding or removing gravity
Which of the following is NOT a form of energy?
Chemical
Electrical
Mechanical
Atomic
What energy conversion occurs when fuel burns in the cylinder?
Chemical to thermal
Chemical to electrical
Electrical to mechanical
Thermal to mechanical
What is the amount of matter in an object called?
Volume
Mass
Weight
Size
What is the formula for the area of a circle?
Pi × Diameter
Pi × Radius squared
Pi × Diameter squared
Radius × Circumference
What does the compression ratio compare?
Volume at top dead center and bottom dead center
Volume of air to fuel
Volume of the cylinder and the engine
Volume of fuel at low and high pressure
What is the air/fuel mixture ratio in a typical internal combustion engine?
1:1
14.7:1
12:1
10:1
Which force causes an object to rotate?
Gravitational force
Friction
Centripetal force
Turning force
What is inertia?
The resistance to change in speed or direction
The force that increases momentum
The energy needed to change direction
The speed gained by an object
What is Newton's First Law of Motion?
For every action, there is an equal and opposite reaction
An object in motion stays in motion unless acted upon by a force
Force is equal to mass times acceleration
Momentum equals mass times velocity
15. How is work calculated?
Work is calculated as the product of force and distance.
Work is calculated as the sum of force and distance.
Work is calculated as the difference between force and distance.
Work is calculated as the ratio of force to distance.
What unit is used to measure work?
Newton
Foot-pounds
Joules
Watts
What is torque?
The measure of speed in an object
The force applied to rotate or turn an object
The resistance to friction
The amount of force needed to overcome inertia
What is horsepower?
The amount of work done in a certain amount of time
The force applied to an object
The energy produced by an engine
The amount of energy used to create torque
What is frequency measured in?
Amps
Volts
Hertz
Watts
What is an oscillation?
A wave moving through a vacuum
The back-and-forth movement of an object between two points
A wave traveling through matter
A vibration caused by frequency changes
What is light?
A. A form of mechanical energy
B. A form of electromagnetic radiation
C. A form of thermal energy
D. A form of electrical energy
21. What law explains the behavior of hydraulics?
Pascal's Law
Newton's Law
Boyle's Law
Ohm's Law
What is the behavior of gases at higher temperatures?
Gases compress
Gases expand
Gases condense
Gases remain stable
What is a vacuum in scientific terms?
The absence of all matter
The absence of pressure
The absence of heat
The absence of light
What are the units used to measure pressure?
Watts and Joules
Newtons and Meters
Pascals and PSI
Amps and Volts
What does the pH scale measure? A. The acidity or basicity of a solution B. The temperature of a substance C. The energy in a chemical reaction D. The mass of a solution
The acidity or basicity of a solution
The temperature of a substance
The energy in a chemical reaction
The mass of a solution
What happens in a redox reaction?
Heat is absorbed or released
Electrons are transferred
Atoms are broken down
Molecules are created
What is a catalyst?
A. A substance that slows a chemical reaction
B. A substance that speeds up a chemical reaction without being consumed
C. A substance that stops a chemical reaction
D. A substance that changes during a chemical reaction
What is rust an example of?
Reduction
Oxidation
What is an alloy?
A. A mixture of two or more metals
B. A pure element used for conductivity
C. A substance formed during combustion
D. A byproduct of oxidation
What does electrolysis use to cause chemical change?
Heat
Electricity
Pressure
Light
What charge does a proton carry?
Positive
Negative
Neutral
No charge
What does voltage measure?
The amount of resistance
The flow of electrons
The strength of an electrical force
The charge in a conductor
What is the purpose of a generator in a vehicle?
To create mechanical energy
To store electrical energy
To convert mechanical energy to electrical energy
To convert thermal energy to mechanical energy
What is a natural magnet?
A material that stores electrical charges
A material that naturally has a magnetic field
A material used to conduct heat
A material that resists friction
What happens when a conductor moves through a magnetic field?
Friction occurs
Electricity is produced
Heat is generated
What is friction?
The energy required to move an object
A force that prevents or slows motion
A chemical reaction between two objects
The force applied to change an object’s direction
How is friction reduced in a mechanical system?
Using lubricants or bearings
Increasing pressure
Adding weight
Reducing heat
What is the unit of measurement for electrical current?
Volts
Joules
Amps
Watts
What is a decibel used to measure?
Voltage
Loudness of sound
Frequency of waves
Intensity of light
What is a substance that conducts electricity by breaking down into ions?
Electrode
Electrolyte
Electron
Magnet
Which method transfers heat by direct contact?
Convection
Conduction
Radiation
Diffusion
What is thermal expansion? A. When an object absorbs heat and expands B. When an object loses heat and contracts C. When the mass of an object increases
When an object absorbs heat and expands
When an object loses heat and contracts
When the mass of an object increases
What is a photon?
A. A particle of light
B. A unit of electrical energy
C. A particle of heat
D. A unit of mass
What is an example of convection in a vehicle?
Radiator cooling the engine
Brakes generating heat
Fuel igniting in the cylinder
Engine oil reducing friction
What is kinetic energy?
Energy an object possesses due to its motion
Energy stored in an object at rest
Energy transferred by sound waves
Energy produced by chemical reactions
What does a voltmeter measure?
Current
Resistance
Voltage
Temperature
What is resistance?
The opposition to current flow
The speed of electron flow
The amount of power consumed
The force of magnetic attraction
What causes metal to rust?
Heat exposure
Oxidation with oxygen
Physical abrasion
Contact with acid
What is the unit of measurement for sound frequency?
Amps
Hertz
Decibels
Volts
Fill in the blank: Water boils at _______ degrees Celsius.
100
90
80
70
