Physical Final Test Review

The diagram shows three horizontal forces acting on an object. Neglecting friction, what is the magnitude of force F, if the object remains at rest?

• 6

• 8

• 14

• 22

Tags

NGSS.MS-PS2-2

What is the lowest point of a transverse wave called?

• frequency

• rarefaction

• crest

• trough

An atom has 29 protons, 29 electrons, and 35 neutrons. What is the mass of this atom?

• 29

• 64

• 93

• 35

Which pair of elements have the most physical and chemical properties in common?

• Ge and Se

• Ba and Bi

• Na and Cl

• Li and K

What is the chemical formula for magnesium hydroxide?

• MgH2O

• Mg(OH)2

• (OH)2Mg

• Mg2(OH)

Tags

NGSS.MS-PS1-1

Two identical baseballs are sitting on different ledges. Ball 1 is sitting on a ledge 8 meters above the ground and ball 2 is on a ledge sitting 24 meters above the ground. Which ball has a greater potential energy?

• ball 1

• ball 2

• they have the same potential energy

• there is not enough information to determine the answer

Tags

NGSS.MS-PS3-2

The following diagram represents a closed circuit with three light bulbs and a 10 volt battery. If bulb 3 burns out in the circuit, what will most likely happen?

• Bulb 1 and 2 will not glow

• Bulb 1 will glow, but bulb 2 will not glow.

• Bulb 1 and 2 will not glow as brightly

• Bulb 1 and 2 will continue to glow.

Tags

NGSS.MS-PS3-5

As the wheels of a train move along the train tracks, what type of friction exists between the wheels and the tracks?

• fluid friction

• rolling friction

• sliding friction

• static friction

The graph below shows the motion of four cars. Based on the graph, which statement about all the cars is true?

• They are moving at a constant speed

• they are changing their speed during travel

• they are slowing down

• they are stopped

Tags

NGSS.MS-PS3-1

A child fills a bucket with salt water and sand. How are the contents of the bucket classified?

• a solution

• a compound

• a homogeneous mixture

• a heterogeneous mixture