Uphondo

Which of the following is a unit of force?

• Newton

• Joule

• Watt

• Pascal

What is the acceleration due to gravity on Earth?

• 9.8 m/s

• 9.8 m/s²

• 98 m/s

• 98 m/s²

Which of the following is an example of kinetic energy?

• A book on a shelf

• A compressed spring

• A moving car

• A battery

The law of conservation of energy states that:

• Energy can be created and destroyed

• Energy can be converted from one form to another

• Energy can only be used once

• Energy is always lost as heat

What type of wave is sound?

• Transverse

• Longitudinal

• Electromagnetic

• Surface

What is the chemical symbol for sodium?

• S

• So

• Na

• N

Which of the following is a chemical change?

• Melting of ice

• Dissolving sugar in water

• Rusting of iron

• Breaking a glass

An atom with a different number of neutrons than protons is called:

• An isotope

• An ion

• A molecule

• A compound

What is the pH of a neutral solution?

Which element is most abundant in the Earth's crust?

• Oxygen

• Hydrogen

• Carbon

• Silicon