TEAS Test - Basic Physical Principles
Question 1
What is the SI unit of force?
A. Joule
B. Watt
C. Newton
D. Pascal
Answer: The Newton is the SI unit of force, defined as the force required to accelerate a 1 kg mass by 1 m/s².
Question 2
Which of the following is a vector quantity?
A. Speed
B. Velocity
C. Mass
D. Temperature
Answer: Velocity is a vector quantity because it has both magnitude and direction, unlike speed, which is scalar.
Question 3
What is the acceleration due to gravity on Earth’s surface?
A. 9.8 m/s
B. 9.8 m/s²
C. 9.8 km/h
D. 9.8 km/s²
Answer: The acceleration due to gravity is approximately 9.8 m/s², as it measures the rate of change of velocity per second.
Question 4
Which type of energy is associated with an object’s motion?
A. Potential
B. Kinetic
C. Thermal
D. Chemical
Answer: Kinetic energy is the energy an object possesses due to its motion, calculated as ½ mv².
Question 5
What is the formula for calculating work?
A. Work = Mass × Acceleration
B. Work = Force × Distance
C. Work = Force ÷ Distance
D. Work = Mass × Velocity
Answer: Work is calculated as the product of force and the distance over which the force is applied, measured in joules.
Question 6
Which law states that an object at rest stays at rest unless acted upon by an external force?
A. Newton’s Second Law
B. Newton’s First Law
C. Newton’s Third Law
D. Law of Universal Gravitation
Answer: Newton’s First Law, also known as the law of inertia, describes how objects resist changes to their state of motion.
Question 7
What is the unit of power?
A. Watt
B. Joule
C. Newton
D. Volt
Answer: The watt is the SI unit of power, equivalent to one joule per second.
Question 8
Which of the following is an example of a simple machine?
A. Battery
B. Lever
C. Motor
D. Circuit
Answer: A lever is a simple machine that amplifies force or motion, consisting of a rigid bar pivoting around a fulcrum.
Question 9
What is the primary source of Earth’s energy?
A. Moon
B. Sun
C. Earth’s core
D. Wind
Answer: The Sun provides the primary energy for Earth’s climate and ecosystems through solar radiation.
Question 10
What type of energy is stored in a stretched spring?
A. Potential
B. Kinetic
C. Thermal
D. Electrical
Answer: Potential energy is stored in a stretched spring due to its position or configuration.
Question 11
Which force opposes the motion of objects sliding against each other?
A. Gravity
B. Friction
C. Magnetism
D. Tension
Answer: Friction is the force that resists the relative motion of objects in contact, such as sliding surfaces.
Question 12
What is the SI unit of energy?
A. Newton
B. Watt
C. Joule
D. Pascal
Answer: The joule is the SI unit of energy, equivalent to the work done by a force of one newton over one meter.
Question 13
According to Newton’s Third Law, for every action, there is:
A. An equal and opposite reaction
B. An equal and opposite reaction
C. A proportional reaction
D. No reaction
Answer: Newton’s Third Law states that for every action force, there is an equal and opposite reaction force.
Question 14
What is the formula for density?
A. Density = Mass × Volume
B. Density = Mass ÷ Volume
C. Density = Weight × Volume
D. Density = Volume ÷ Mass
Answer: Density is calculated as mass divided by volume, typically expressed in kg/m³.
Question 15
Which of the following is a renewable energy source?
A. Coal
B. Solar
C. Natural Gas
D. Oil
Answer: Solar energy is renewable because it is derived from the Sun, which is a virtually inexhaustible source.
Question 16
What is the term for the resistance of an object to changes in its motion?
A. Inertia
B. Momentum
C. Acceleration
D. Force
Answer: Inertia is the property of an object to resist changes to its state of motion, as described by Newton’s First Law.
Question 17
Which type of wave requires a medium to travel?
A. Electromagnetic
B. Mechanical
C. Radio
D. Light
Answer: Mechanical waves, such as sound, require a medium like air or water to propagate.
Question 18
What is the speed of an object that travels 100 meters in 20 seconds?
A. 5 m/s
B. 5 m/s
C. 2000 m/s
D. 0.2 m/s
Answer: Speed is calculated as distance ÷ time, so 100 m ÷ 20 s = 5 m/s.
Question 19
What is the primary function of a pulley?
A. Store energy
B. Change the direction of force
C. Increase friction
D. Generate heat
Answer: A pulley changes the direction of an applied force, making it easier to lift or move objects.
Question 20
Which of the following is a scalar quantity?
A. Velocity
B. Acceleration
C. Mass
D. Force
Answer: Mass is a scalar quantity because it has magnitude but no direction.
Question 21
What is the formula for momentum?
A. Momentum = Mass × Acceleration
B. Momentum = Mass × Velocity
C. Momentum = Force × Time
D. Momentum = Mass ÷ Velocity
Answer: Momentum is the product of an object’s mass and velocity, measured in kg·m/s.
Question 22
Which type of energy is associated with an object’s height?
A. Kinetic
B. Gravitational Potential
C. Thermal
D. Chemical
Answer: Gravitational potential energy depends on an object’s height and mass in a gravitational field.
Question 23
What is the effect of doubling the mass of an object on its kinetic energy, assuming constant velocity?
A. Halves
B. Doubles
C. Quadruples
D. No change
Answer: Kinetic energy (½ mv²) is directly proportional to mass, so doubling the mass doubles the kinetic energy.
Question 24
Which of the following is a unit of pressure?
A. Joule
B. Watt
C. Pascal
D. Newton
Answer: The pascal is the SI unit of pressure, defined as one newton per square meter.
Question 25
What type of simple machine is a seesaw?
A. Lever
B. Pulley
C. Wedge
D. Screw
Answer: A seesaw is a lever, with a fulcrum in the middle allowing it to pivot and balance forces.
Question 26
What is the primary source of energy for Earth’s tides?
A. Sun
B. Moon
C. Wind
D. Earth’s rotation
Answer: The Moon’s gravitational pull is the primary cause of Earth’s tides.
Question 27
Which law relates force, mass, and acceleration?
A. Newton’s Second Law
B. Newton’s First Law
C. Newton’s Third Law
D. Law of Gravitation
Answer: Newton’s Second Law states that force equals mass times acceleration (F = ma).
Question 28
What is the term for the amount of matter in an object?
A. Weight
B. Mass
C. Volume
D. Density
Answer: Mass is the measure of the amount of matter in an object, typically in kilograms.
Question 29
Which type of energy is transferred through a wire in an electric circuit?
A. Electrical
B. Thermal
C. Kinetic
D. Potential
Answer: Electrical energy is the energy transferred by the movement of electrons through a conductor.
Question 30
What is the effect of doubling the distance an object travels under constant force on the work done?
A. Halves
B. Doubles
C. Quadruples
D. No change
Answer: Work is force times distance, so doubling the distance doubles the work done.
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