Forces and Simple Machines Quiz

What is the definition of a force?

• A push or pull that can change the motion of an object

• A type of energy stored in objects

• A measurement of temperature

• A form of light energy

Which instrument is commonly used to measure force?

• Spring balance

• Thermometer

• Barometer

• Voltmeter

What does a force diagram show?

• The direction and magnitude of forces acting on an object

• The temperature changes in an experiment

• The speed of an object over time

• The color of different objects

What is the difference between balanced and unbalanced forces?

• Balanced forces do not change motion, unbalanced forces do

• Balanced forces increase speed, unbalanced forces decrease speed

• Balanced forces create heat, unbalanced forces create light

• Balanced forces are invisible, unbalanced forces are visible

What does Newton’s First Law state?

• An object will remain at rest or in uniform motion unless acted upon by a force

• Force equals mass times acceleration

• For every action, there is an equal and opposite reaction

• Energy cannot be created or destroyed

What is inertia?

• The tendency of an object to resist a change in motion

• The force that pulls objects toward Earth

• The speed at which an object moves

• The amount of space an object occupies

How do you calculate force using Newton’s second law?

• Force = mass × acceleration

• Force = mass ÷ volume

• Force = speed × time

• Force = energy ÷ distance

What is friction?

• A force that opposes motion between two surfaces

• A type of energy

• A measurement of mass

• A form of light

Which of the following is an effect of friction?

• It slows down moving objects

• It increases the temperature of water

• It changes the color of objects

• It creates sound waves

How is gravity best described?

• A force that attracts objects toward each other

• A type of chemical reaction

• A form of sound energy

• A measurement of temperature