Question 1

Soap helps to clean things using principles of

Accepted Answer

Solubility

Answer

Density

Answer

Pressure

Answer

Pascal's Law

Question 2

In order for an object to sink it must have a density that is ________________ the water surrounding it.

Accepted Answer

greater than

Answer

the same

Answer

less than

Question 3

Decompression sickness happens because nitrogen bubbles form in the bloodstream due to extreme changes in ___________________________.

Accepted Answer

pressure

Answer

density

Answer

volume

Answer

solubility

Question 4

The purpose of a valve is to control the _______________________ of a fluid

Accepted Answer

direction of flow

Answer

pressure

Answer

solubility

Answer

density

Question 5

Why do submarines have two hulls?

Accepted Answer

The outer hull is waterproof, and the inner hall is designed to withstand pressure

Answer

The second hull is a backup in case the first one is crushed by the water pressure

Answer

Submarines usually have one hull, only specialized submarines have two hulls.

Answer

The inner hull is waterproof and the outer hull is made of hard steel

Question 6

What is the purpose of a ballast tank on a submarine?

Accepted Answer

It allows submarines to change their density so they can rise or sink in the water

Answer

The hold fuel to power the engines of the submarine

Answer

They hold oxygen reserves for the crew

Answer

It is designed to help withstand intense water pressure

Question 7

What state of matter can be compressed?

Accepted Answer

Gas

Answer

Solid

Answer

Liquid

Question 8

Compressibility is the ability of a substance to change __________________.

Accepted Answer

Volume

Answer

Mass

Answer

Temperature

Question 9

The equal transmission of pressure through a fluid is described by

Accepted Answer

Pascal's Law

Answer

Newton's law

Answer

Pressure law

Question 10

Hydraulic systems use an enclosed

Accepted Answer

liquid

Answer

solid

Answer

gas

Question 11

A fluid will always move from an area of _____________________ pressure

Accepted Answer

high to low

Answer

equalized

Answer

low to high

Question 12

The water loving end of soap is called

Accepted Answer

Hydrophilic

Answer

Hydrophobic

Answer

Oil-repellent

Question 13

A pump creates low __________________ by moving air or fluid out of an area creating a vacuum.

Accepted Answer

pressure

Answer

density

Answer

concentration

Answer

volume

Question 14

A pump must be a sealed system, because if there were holes that the fluid could escape a ______________ could not be created.

Accepted Answer

vacuum

Answer

movement

Answer

density differential

Question 15

If a force of 40 N is exerted over an area of 4 m^2, then the pressure being exerted is

Accepted Answer

10 Pa

Answer

160 Pa

Answer

0.1 Pa

Question 16

What force must be exerted to make a pressure of 10 Pa over an area of 2 m^2?

Accepted Answer

20 N

Answer

5 N

Answer

0.2 N

Question 17

If 20 N of force is exerted, and the pressure obtained is 10 Pa, then what area would that force have been exerted over?

Accepted Answer

2 m^2

Answer

15 m^2

Answer

10 m^2

Answer

0.5 m^2

Question 18

The viscosity of liquids can be compared using their

Accepted Answer

resistance to flow

Answer

density

Answer

resistance to acceleration

Answer

volume

Question 19

In order to increase the rate of flow in a pipeline the oil should be

Accepted Answer

heated

Answer

cooled

Answer

compressed

Answer

expanded

Question 20

The correct units for density are

Accepted Answer

g/mL

Answer

mL/g

Answer

Pa

Answer

N

Question 21

The correct units for pressure are

Accepted Answer

pascals

Answer

g/mL

Answer

newtons

Answer

metres squared

Question 22

1500 mL is equivalent to

Accepted Answer

1.50 L

Answer

15 L

Answer

150 L

Answer

1500000 L

Question 23

17.	When the density of gases is compared to the density of solids, the Particle Model of Matter predicts that the

Accepted Answer

density of gases will be lower because gas particles are farther apart than solid particles.

Answer

density of solids will be higher because solids contain large amounts of kinetic energy

Answer

density of gases will be higher because gas particles have large amounts of kinetic energy.

Answer

density of solids will be lower because solid particles are closely packed.

Question 24

Which forms of matter assume the shape of their container?

Accepted Answer

gas and liquid

Answer

liquid and solid

Answer

gas and solid

Answer

liquid and solid

Question 25

Which of the following has the greatest concentration?

Accepted Answer

5.6 g of sugar dissolved in 10 mL of water

Answer

12 g of potassium permanganate dissolved in 25 mL of water

Answer

25 g of table salt dissolved in 50 mL of water

Answer

40 g of ammonium nitrate dissolved in 100 mL of water

Question 26

For most common solids and liquid substances, solubility increase as the temperature increases.  This is not the case with

Accepted Answer

gases

Answer

water

Answer

alcohol

Answer

sugar

Question 27

The ease with which fluids flow is called

Accepted Answer

viscosity

Answer

density

Answer

pressure

Answer

solubility

Question 28

When a vehicle engine warms up, the viscosity of the engine oil will

Accepted Answer

decrease

Answer

stay the same

Answer

increase

Question 29

The relationship between force and area is called

Accepted Answer

pressure

Answer

volume

Answer

concentration

Answer

density

Question 30

Density and buoyant force are related.  As the

Accepted Answer

density of the fluid decreases, the buoyant force decreases

Answer

density of a fluid increases, the buoyant force decreases

Answer

density of a fluid increases, the buoyant force remains constant

Answer

density of a fluid deceases, the buoyant force increases

Question 31

Scuba divers, submarines, and fish can all

Accepted Answer

sink, float and achieve neutral buoyancy

Answer

float

Answer

sink

Answer

achieve neutral buoyancy

Question 32

A system that utilizes a gas to gain a force advantage is called a

Accepted Answer

pneumatic system

Answer

hydraulic system

Answer

dynamic system

Answer

buoyant system

Question 33

Which of the following variables can be present more than once in an experiment

Accepted Answer

controlled

Answer

constant

Answer

manipulated

Answer

responding

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