Density, Specific Gravity, and Pressure

Question 1

Is the ratio of an object’s mass to its volume

Answer 1

Density (p)

Question 2

Isthe measurement of how tightly a material is packed together. It is defined as the mass per unit volume.

Answer 2

Density

Question 3

Density Symbol:

Answer 3

D or p

Question 4

Density Formula:

Answer 4

p = m x v

Question 5

Is the ratio of the density of a substance to the density of water at 4°C.

Answer 5

Specific Gravity or Relative Density

Question 6

Is the ratio of two quantities that have the same units, it is a dimensionless property and therefore has no unit because the units of the two quantities cancel each other out.

Answer 6

Specific Gravity

Question 7

Specific Gravity Formula:

Answer 7

SG = p / pH2O

Question 8

A material will sink in water if its specific gravity is more than this value, on the other hand, a material will float on water if its specific gravity is less than this value.

Answer 8

1.0

Question 9

Whenever two substances or objects come into contact, they exert forces on each other.

Answer 9

Pressure

Question 10

The force applied by a body per unit area on another body is known as?

Answer 10

Pressure

Question 11

Based on its operational definition, pressure can be expressed in?

Answer 11

Newtons per square meter, Newtons per centimeter, Dynes per centimeter.

Question 12

Another unit for pressure that is commonly used is?

Answer 12

Pascal (Pa)

Question 13

The unit Pascal is named after?

Answer 13

French Physicist Blaise Pascal (1623-1662)

Question 14

Isthe increase in pressure at increasing depths in a liquid. This pressure increases because the liquid at lower depths has to support all of the water above it.

Answer 14

Liquid Pressure

Question 15

Is directly proportional to force.

Answer 15

Pressure

Question 16

Also depends on the area to which the force is applied.

Answer 16

Pressure