Year 7 Forces

What are Newton's three laws of motion?

• Objects at rest stay at rest, force equals mass divided by acceleration, every action has an equal and opposite reaction
• Objects at rest stay at rest, force equals mass times acceleration, every action has an equal and opposite reaction
• Objects in motion stay in motion, force equals mass divided by acceleration, every action has an equal and opposite reaction
• Objects in motion stay in motion, force equals mass times acceleration, every action has an equal and opposite reaction

What is Newton's law of universal gravitation?

• A law that states that the force between two objects is directly proportional to the sum of their masses
• A law that states that the force between two objects is directly proportional to the product of their masses, and inversely proportional to the square of the distance between them
• A law that states that objects in motion tend to stay in motion
• A law that states that the force between two objects is inversely proportional to the distance between them

How can simple machines be combined to form complex machines?

• Simple machines can only be combined to form simple machines
• Simple machines can be combined to form complex machines such as a bicycle or a car
• Simple machines cannot be combined
• Simple machines can only be combined with other simple machines of the same type

What is a force?

• An influence that causes a change in motion or shape of an object
• A type of wave
• A type of energy
• A type of matter

Which of the following is an example of a simple machine?

• A hammer
• A car
• A computer
• A book

What is gravity?

• A force that only affects objects in space
• A force that attracts two objects with mass
• A force that has no effect on objects with mass
• A force that repels two objects with mass

What is the relationship between forces and motion?

• Forces cause motion
• Forces and motion are unrelated
• Motion causes forces
• Forces and motion are the same thing

What are Newton's Laws of Motion?

• A set of principles that describe the relationship between matter and motion
• A set of principles that describe the relationship between forces and motion
• A set of principles that describe the relationship between energy and motion
• A set of principles that describe the relationship between waves and motion

What are the four fundamental forces in nature?

• Gravitational force, electromagnetic force, electric force, and weak nuclear force
• Gravitational force, electric force, strong nuclear force, and weak nuclear force
• Magnetic force, electric force, strong nuclear force, and weak nuclear force
• Gravitational force, electromagnetic force, strong nuclear force, and weak nuclear force

What can we reflect on by studying forces, simple machines, and gravity?

• The history of art
• The engineering feats accomplished by humans
• The history of music
• The history of literature