Science final exam term 2

What is Newton's third law

• For every action, there is a greater reaction

• For every action, there is no reaction

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

• For every action, there is a smaller reaction

What is a force pair

• A pair of forces that are equal in magnitude and direction
• A pair of forces that are equal in magnitude and opposite in direction
• A force pair that always results in motion
• A force pair that only exists in outer space

Balanced forces and force pairs are the same

• Depends on the situation
• Partially true
• True
• False

What is the normal force

• The force of gravity pulling an object downward
• The force of friction between two surfaces
• The force of air resistance on an object
• The force pushing perpendicular to the object's surface

What is an elastic collision

• A collision in which kinetic energy is lost
• A collision in which no energy is involved
• A collision in which only potential energy is conserved
• it is when colliding objects bounce off of each other

What is a noncontact force

• A force that can be exerted on an object without physically touching it
• A force that can only be exerted by humans
• A force that only affects living organisms
• A force that requires direct physical contact with an object

What is gravity

• Gravity is the force that attracts every object with mass

• Gravity is the force that causes objects to float in space
• Gravity is the force that pushes objects away from a planet's center
• Gravity is the force that only affects objects with a lot of mass

What is matter

• Something that doesn't have mass or take up space
• Anything that has mass and takes up space
• Only solid objects
• Only visible objects

What is a field

• A type of fruit that grows on a tree
• A unit of measurement for land
• A region of space that has a physical quantity at every point

• A type of sports equipment used in baseball

what is the relation between mass and gravitational force

• Gravitational force is proportional to the mass of an object.

• Gravitational force increases with the square of the mass of an object.

• Mass has no effect on gravitational force.

• Gravitational force is inversely proportional to the mass of an object.