Physics P5 P6 P7

Question 1

What is the unit of force in the International System of Units (SI)?

Answer 1

Newton (N)

Question 2

True or False: Energy can be created and destroyed.

Answer 2

False

Question 3

Fill in the blank: The formula for calculating kinetic energy is _____ = 1/2 mv^2.

Answer 3

KE

Question 4

What is the principle that states that pressure exerted on a confined fluid is transmitted undiminished in all directions?

Answer 4

Pascal’s principle

Question 5

What type of energy is stored in an object due to its position?

Answer 5

Potential energy

Question 6

Which law states that the total momentum of a closed system remains constant?

Answer 6

Law of conservation of momentum

Question 7

What is the acceleration due to gravity on Earth?

Answer 7

Approximately 9.81 m/s²

Question 8

True or False: An object in motion will stay in motion unless acted upon by an external force.

Answer 8

True

Question 9

What is the formula for calculating work done?

Answer 9

Work = Force x Distance x cos(θ)

Question 10

Fill in the blank: The unit of power is _____ in the SI system.

Answer 10

Watt (W)

Question 11

What type of wave requires a medium to travel through?

Answer 11

Mechanical wave

Question 12

What is the frequency of a wave if its period is 0.5 seconds?

Answer 12

2 Hz

Question 13

True or False: In a vacuum, all electromagnetic waves travel at the same speed.

Answer 13

True

Question 14

What is the law that describes the relationship between voltage, current, and resistance?

Answer 14

Ohm’s Law

Question 15

Fill in the blank: The measure of the average kinetic energy of particles in a substance is called _____ .

Answer 15

Temperature

Question 16

What is the term for the bending of light as it passes from one medium to another?

Answer 16

Refraction

Question 17

What is the primary force that causes objects to fall towards the Earth?

Answer 17

Gravity

Question 18

True or False: The higher the temperature of a substance, the greater its internal energy.

Answer 18

True

Question 19

What is the formula for calculating the potential energy of an object?

Answer 19

PE = mgh

Question 20

What is the phenomenon where a wave changes direction as it passes through an opening or around an obstacle?

Answer 20

Diffraction

Question 21

Fill in the blank: The total energy of a closed system remains constant according to the law of _____ .

Answer 21

Conservation of energy

Question 22

What is the term for the resistance of an object to changes in its state of motion?

Answer 22

Inertia

Question 23

True or False: Light can exhibit both wave-like and particle-like properties.

Answer 23

True

Question 24

What is the term for the energy transferred due to a temperature difference?

Answer 24

Heat

Question 25

What is the formula for calculating the speed of a wave?

Answer 25

Speed = Frequency x Wavelength

Question 26

Fill in the blank: The force that opposes the motion of an object is called _____ .

Answer 26

Friction

Question 27

What is the name of the effect where the frequency of a wave changes due to the motion of the source or observer?

Answer 27

Doppler effect

Question 28

What is the SI unit of electric charge?

Answer 28

Coulomb (C)

Question 29

True or False: An electric circuit must be closed for current to flow.

Answer 29

True

Question 30

What is the formula for calculating the gravitational potential energy of an object?

Answer 30

PE = mgh

Question 31

Fill in the blank: The energy stored in a compressed spring is an example of _____ energy.

Answer 31

Elastic

Question 32

What is the unit of frequency in the International System of Units (SI)?

Answer 32

Hertz (Hz)

Question 33

What is the term for the energy associated with the motion of an object?

Answer 33

Kinetic energy

Question 34

True or False: The pressure of a gas increases as its volume decreases at constant temperature.

Answer 34

True

Question 35

What physical quantity is defined as the rate of doing work?

Answer 35

Power

Question 36

Fill in the blank: The measure of the amount of matter in an object is called _____ .

Answer 36

Mass

Question 37

What is the term for the path followed by an object in motion?

Answer 37

Trajectory

Question 38

What is the term for the energy of motion at the microscopic level?

Answer 38

Thermal energy

Question 39

True or False: Light travels faster in water than in air.

Answer 39

False

Question 40

What is the principle that states that energy cannot be created or destroyed, only transformed?

Answer 40

Law of conservation of energy

Question 41

What is the term for the maximum displacement of a wave from its rest position?

Answer 41

Amplitude

Question 42

Fill in the blank: The force of gravity decreases with increasing distance according to the _____ law.

Answer 42

Inverse square