Physics Words

Physics Words — Questions & Answers

Master Physics Words through hands-on learning! This medium level Trivia Quiz for Grade 7-8 students makes Science concepts memorable and engaging. Perfect for supplementing lessons and encouraging independent study.

1. What is the force that pulls objects towards the center of the Earth?

   Magnetism Friction Gravity Inertia

   ✓ Gravity

   Gravity is the force of attraction between any two objects with mass. Earth's gravity pulls everything towards its center.

2. Which term describes the rate at which an object changes its position?

   Acceleration Velocity Speed Momentum

   ✓ Velocity

   Velocity is the speed of an object in a particular direction. It tells us how fast something is moving and where it is going.

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

   Joule Watt Newton Pascal

   ✓ Newton

   A Newton (N) is the SI unit of force, named after Sir Isaac Newton. It is defined as the force needed to accelerate a 1-kilogram mass at 1 meter per second squared.

4. Which concept describes an object's resistance to a change in its state of motion?

   Momentum Inertia Energy Power

   ✓ Inertia

   Inertia is the tendency of an object to resist changes in its state of motion. The more mass an object has, the greater its inertia.

5. What is the energy an object possesses due to its motion called?

   Potential Energy Thermal Energy Kinetic Energy Chemical Energy

   ✓ Kinetic Energy

   Kinetic energy is the energy of motion. An object in motion has kinetic energy.

6. Which term refers to the amount of matter in an object?

   Volume Density Mass Weight

   ✓ Mass

   Mass is a fundamental property of matter, representing the amount of 'stuff' in an object. It is measured in kilograms (kg).

7. What is the tendency of a fluid to resist flow called?

   Density Pressure Buoyancy Viscosity

   ✓ Viscosity

   Viscosity is a measure of a fluid's resistance to flow. Honey has high viscosity, while water has low viscosity.

8. What does the term 'wavelength' describe in waves?

   The number of waves passing a point per second The distance between two consecutive crests or troughs The height of a wave from its center line The speed at which a wave travels

   ✓ The distance between two consecutive crests or troughs

   Wavelength is the spatial period of a periodic wave, the distance over which the wave's shape repeats. It's the distance between two identical points on consecutive waves.

9. Which law states that for every action, there is an equal and opposite reaction?

   Newton's First Law Newton's Second Law Newton's Third Law Archimedes' Principle

   ✓ Newton's Third Law

   Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction. This means forces always occur in pairs.

10. What is the energy stored in an object due to its position or state called?

    Kinetic Energy Thermal Energy Electrical Energy Potential Energy

    ✓ Potential Energy

    Potential energy is stored energy. For example, a stretched rubber band or a ball held high above the ground has potential energy.