Physical Science Chapter 5

Groups 1 & 17 (1A & 7A):

• do not react

• are the least reactive

• are the most reactive

• are somewhat reactive

elements that are not good conductors of heat & electricity

The groups on the right side of the table are more:

• metallic

• nonmetallic

• soft

• gaseous

The tendency of an object to resist changes in its state of motion

• Force

• Gravity

• Inertia

• Mass

Which of the following best describes the relationship between force and acceleration according to Newton's second law?

• Force is inversely proportional to acceleration

• Force is directly proportional to acceleration

• Force and acceleration are unrelated

• Force is proportional to the square of acceleration

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NGSS.MS-PS2-2

According to Newton's Third Law, when a person pushes on a wall with a force of 50N,

what is the reaction force

• 50N pulling the person toward the wall

• 50N exerted by the wall on the person

• 100N pushing back on the person

• No reaction force exists

A form of friction exerted by a fluid on an object moving through the fluid

or as the fluid flows around the object

• Applied force

• Drag

• Normal force

• Tension

The reason a dinner plate resting on a table does not move:

• The plate is in equilibrium due to balanced forces.

• The plate has no mass

• External forces acting on the plate keep it in a state of rest

• The plate has no friction

How does the distance between the centers of the mass of two objects affect the gravitational force between them?

• The farther apart the objects, the stronger the gravitational force

• The closer the objects, the stronger the gravitational force

• The gravitational force is not affected by distance

• The force is stronger when objects are at rest

What happens to an object in free fall when air resistance is minimal

• It will fall slower over time

• It will fall faster over time

• It will accelerate at a constant rate

• The results are dependent on the objects mass

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NGSS.MS-PS2-4