Some Year 8 Physical Sciences

What is the force that pulls objects towards the centre of the Earth?

• Inertia

• Friction

• Gravity

• Tension

Which of Newton's laws states that an object at rest will remain at rest, and an object in motion will stay in motion unless acted upon by an external force?

• Newton's First Law

• Newton's First Law

• Newton's Third Law

• Newton's Law of Universal Gravitation

Which type of energy is possessed by an object due to its motion?

• Potential Energy

• Kinetic Energy

• 1. Chemical Energy

• Thermal Energy

What is the SI unit of force?

• Watts

• Joules

• Newton

• Kilogram

Which state of matter has a definite shape and volume?

• Solid

• Liquid

• Gas

• Plasma

What is the process called when a gas changes directly into a solid without passing through the liquid state?

• Sublimation

• Condensation

• Vaporization

• Melting

Which type of energy transformation occurs when a toaster converts electrical energy into heat energy?

• Electrical to Mechanical

• Mechanical to Electrical

• Electrical to Thermal

• Thermal to Electrical

What type of energy is stored in batteries?

• Nuclear Energy

• Gravitational Energy

• Mechanical Energy

• Chemical Energy

Which law of thermodynamics states that energy cannot be created nor destroyed, only converted from one form to another?

• Zeroth Law of Thermodynamics

• First Law of Thermodynamics

• Second Law of Thermodynamics

• Third Law of Thermodynamics

What is the unit of measurement for the intensity of sound?

• Decibel

• Hertz

• Watt

• Kelvin