Physics Concepts

What is the SI unit of force?

• Kilogram

• Newton (N)

• Joule

• Meter

What is the law of conservation of energy?

• Energy can be destroyed completely

• Energy can be created out of nothing

• Energy cannot be created or destroyed, only transferred or converted from one form to another.

• Energy can only be converted into matter

In a simple electric circuit, what is the function of a resistor?

• To limit the flow of current in the circuit

• To store electrical energy in the circuit

• To generate magnetic fields in the circuit

• To increase the voltage in the circuit

How does heat transfer occur?

• Heat transfer occurs through evaporation, condensation, and sublimation.

• Heat transfer occurs through conduction, convection, and radiation.

• Heat transfer occurs through compression, expansion, and diffusion.

• Heat transfer occurs through absorption, reflection, and refraction.

What happens to the particles in a substance during thermal expansion?

• Particles gain kinetic energy and move further apart.

• Particles gain potential energy and move closer together.

• Particles lose kinetic energy and move closer together.

• Particles remain stationary and do not change position.

What is the basic unit of length in the metric system?

• inch

• liter

• gram

• meter

What is the difference between mass and weight?

• Mass is a measure of the amount of matter in an object, while weight is the force of gravity acting on that mass.

• Mass is a scalar quantity, while weight is a vector quantity.

• Mass and weight are the same thing.

• Mass is a measure of volume, while weight is a measure of density.

How is pressure defined in physics?

• Pressure is the amount of water in a container.

• Pressure is the speed of an object in motion.

• Pressure is the temperature of a substance.

• Pressure is defined as force per unit area.

What is the relationship between voltage, current, and resistance in a circuit?

• Voltage is equal to the current divided by the resistance (V = I / R)

• Resistance is equal to the voltage divided by the current (R = V / I)

• Current is equal to the voltage multiplied by the resistance (I = V * R)

• Voltage is equal to the current multiplied by the resistance (V = I * R)

What are the fundamental principles of physics?

• Newton's laws of motion, conservation of energy, conservation of momentum, and the laws of thermodynamics

• Hooke's law, Pascal's principle, Faraday's law

• Kepler's laws of planetary motion, Coulomb's law, Snell's law

• Boyle's law, Archimedes' principle, Ohm's law