Science Post-Test

What is a force?

• A shape changer

• A push or a pull

• A stationary object

• A type of energy

Which of the following is an example of a contact force?

• Frictional Force

• Gravity

• Electromagnetic Force

• Nuclear Force

Who is credited with discovering gravity?

• Galileo Galilei

• Isaac Newton

• Albert Einstein

• Nikola Tesla

Which force keeps planets in orbit?

• Electromagnetic force

• Applied force

• Gravitational force

• Frictional force

What is the value of acceleration due to gravity on Earth?

• 8.9 m/s²

• 10.0 m/s²

• 9.8 m/s²

• 12.5 m/s²

What does acceleration refer to?

• The rate of change of distance

• The rate of change of velocity

• The rate of motion

• A constant speed

Which of the following describes displacement?

• The total length of a path taken

• The straight-line distance between two points

• The speed of an object

• The time taken to cover a distance

What is a scalar quantity?

• A quantity with only direction

• A quantity with only magnitude

• A quantity with both magnitude and direction

• A vector

What is a vector quantity?

• A quantity with magnitude and direction

• A quantity with magnitude only

• A measure of force

• The rate of motion

What force holds the protons and neutrons within the nucleus?

• Gravitational Force

• Electromagnetic Force

• Nuclear Force

• Applied Force