Floaters And Sinkers Vocab

Question 1

At a constant temperature, the volume of a given quantity of gas is inversely proportional to the pressure upon the gas.

Answer 1

Boyle’s law

Question 2

An upward force acting on an immersed or floating body by the supporting fluid.

Answer 2

Buoyancy

Question 3

The net upward force exerted by a fluid on a submerged object.

Answer 3

Buoyant force

Question 4

A property of a substance, equal to the mass divided by the volume; commonly thought of as the lightness or heaviness of a substance.

Answer 4

Density

Question 5

Term applied to fluid that is moved out of the way when an object is placed in the fluid.

Answer 5

Displaced

Question 6

Potential energy due to tension – either stretch (rubber bands, etc.) or compression (springs, etc.).

Answer 6

Elastic potential energy

Question 7

The ability to do work. Appears in many forms, all of which are either kinetic or potential.

Answer 7

Energy

Question 8

A state of balance between opposing forces.

Answer 8

Equilibrium

Question 9

Anything that flows; any liquid or gas.

Answer 9

Fluid

Question 10

A push or a pull. An influence on a body or system, causing or tending to cause a change in movement or shape.

Answer 10

Force

Question 11

A pulling force exerted by any mass upon another.

Answer 11

Gravity

Question 12

The tendency of matter to remain at rest if at rest, or, if moving, to keep moving in the same direction, unless affected by an outside (or unbalanced) force.

Answer 12

Inertia

Question 13

Energy of motion. Includes heat, sound, and light (motion of molecules).

Answer 13

Kinetic energy (KE)

Question 14

The amount of matter that is contained by an object.

Answer 14

Mass

Question 15

The quantity of motion of a moving object, equal to the product of its mass and its velocity.

Answer 15

Momentum

Question 16

Exists when the weight of the body is equal to the weight of an equal volume of the displaced fluid. The body remains suspended – neither rising nor sinking – unless acted upon by
an outside force.

Answer 16

Neutral buoyancy

Question 17

Energy of position; energy that is stored and held in readiness. Includes chemical energy, such as fossil fuels, electric batteries, and the food we eat.

Answer 17

Potential energy (PE)

Question 18

The force per unit of surface area; exerted perpendicular to the surface; measured in Pascals.

Answer 18

Pressure

Question 19

A floating object displaces a weight of fluid equal to its own weight.

Answer 19

Principle of floatation

Question 20

How fast an object is moving. The distance traveled over time.

Answer 20

Speed

Question 21

The speed of something in a given direction.

Answer 21

Velocity

Question 22

The relationship between buoyancy and displaced fluid: An immersed object
is buoyed up by a force equal to the weight of the fluid it displaces.

Answer 22

Archimedes principle

Question 23

The amount of space enclosed by a shape or object; how much 3-dimensional space
(length, width, and height) it occupies.

Answer 23

Volume

Question 24

The downward force caused by gravity on an object.

Answer 24

Weight

Question 25

The force exerted on a surface divided by the total area over which the force is exerted

Answer 25

Pressure

Question 26

Pressure

Answer 26

The force exerted on a surface divided by the total area over which the force is exerted

Question 27

A unit of pressure equal to 1 N per square meter

Answer 27

Pascal

Question 28

Pascal

Answer 28

A unit of pressure equal to 1 N per square meter

Question 29

A material that can easily flow

Answer 29

Fluid

Question 30

Fluid

Answer 30

A material that can easily flow

Question 31

An instrument used to measure atmospheric pressure

Answer 31

Barometer

Question 32

Barometer

Answer 32

An instrument used to measure atmospheric pressure

Question 33

The ratio of the mass of a substance to its volume

Answer 33

Density

Question 34

Density

Answer 34

The ratio of the mass of a substance to its volume

Question 35

The upward force exerted by a fluid on a submerged object

Answer 35

Buoyant force

Question 36

Buoyant force

Answer 36

The upward force exerted by a fluid on a submerged object

Question 37

The rule that the buoyant force acting on a submerged object is equal to the weight of the volume of fluid displaced by the object

Answer 37

Archimedes principle

Question 38

Archimedes principle

Answer 38

The rule that the buoyant force acting on a submerged object is equal to the weight of the volume of fluid displaced by the object

Question 39

The rule that when force is applied to a confined fluid the change in pressure is transmitted equally to all parts of the fluid

Answer 39

Pascals principle

Question 40

Pascals principle

Answer 40

The rule that the buoyant force acting on a submerged object is equal to the weight of the volume of fluid displaced by the object

Question 41

A system that multiplies force by transmitting pressure from a small surface area through a confined fluid to a larger surface area

Answer 41

Hydraulic system

Question 42

Hydraulic system

Answer 42

A system that multiplies force by transmitting pressure from a small surface area through a confined fluid to a larger surface area

Question 43

What does pressure depend on?

Answer 43

The amount of pressure you exert depends on the area over which you exert a force

Question 44

How do fluids exert pressure?

Answer 44

In a fluid all of the force is exerted by the individual particles combine to make up the pressure exerted by the fluid

Question 45

How does fluid pressure change with elevation and death

Answer 45

Atmospheric pressure decreases as your elevation increases | Water pressure increases as depth increases

Question 46

Why does pressure decrease as your elevation increases

Answer 46

At a higher elevation there is less air above you and therefore less air pressure

Question 47

Why does water pressure increase the depth increases

Answer 47

Because the further down into the water you go, the more water there is above you, and the more it can push down on you

Question 48

How can you predict whether an object will float or sink in a fluid?

Answer 48

By comparing the densities

Question 49

What is the effect of the buoyant force

Answer 49

The force acts in the direction opposite to the force of gravity, so it makes an object feel lighter

Question 50

When will an object sink in water

Answer 50

When it is more dense than the water or less than 1 g/cm³

Question 51

When will an object float in water

Answer 51

When it is less dense than the water or less than 1 g/cm³

Question 52

What does Pascal's principal say about change in fluid pressure

Answer 52

When force is applied to a confined fluid the change in pressure is transmitted equally to all parts of the fluid

Question 53

How does a hydraulic system work

Answer 53

A hydrology system multiplies force by applying the force to a small surface area. The increase in pressure is then transmitted to another part of the confined fluid, which pushes on a alarmed surface area

Question 54

The rule that the faster a fluid moves the less pressure the fluid exerts

Answer 54

Bernoullis principle

Question 55

Bernoullis principle

Answer 55

The rule that the faster a fluid moves the less pressure the fluid exerts

Question 56

An upward force

Answer 56

Lift

Question 57

Lift

Answer 57

An upward force

Question 58

How Is fluid pressure related to the motion of a fluid

Answer 58

Bernoulli's principle states that as the speed of a moving fluid increases the pressure exerted by the fluid decreases

Question 59

What are some applications of Bernoulli's principle

Answer 59

It helps explain how planes fly, how an atomizer works, why smoke rises up the chimney, and how we flying disc glides through the air

Question 60

A ship stays afloat as long as the buoyant force is greater than or equal to the ships ________

Answer 60

Weight

Question 61

What is the SI unit of pressure called

Answer 61

The newtons per square meter or the pascal

Question 62

What is force measured in

Answer 62

Newtons

Question 63

Why does a helium balloon float in air

Answer 63

Because the although the air inside a regular balloon is under pressure is denser than the air surrounding it, the air in a helium balloon is heated and is less dense than the air around it

Question 64

What is a piston

Answer 64

It is like a stopper that slides up-and-down in a tube

Question 65

If you divide the force exerted on surface by the total area of the surface you will know the…

Answer 65

Pressure

Question 66

If you divide the mass of an object by its volume you know the objects…

Answer 66

Density

Question 67

Formula for pressure ?

Answer 67

Pressure = force/area

Question 68

Formula for density?

Answer 68

Density = mass/volume

Question 69

The weight of an object that floats has the same value as the...

Answer 69

Buoyant force

Question 70

Increase in pressure on a confined fluid is transmitted equally to all parts of the fluid is known as

Answer 70

Pascals principle

Question 71

The concept that the pressure of the fluid decreases as the speed of the fluid increases is known as

Answer 71

Bernoulli's principle

Question 72

If you stand on 1 foot, you increase the pressure you exert on the ground because…

Answer 72

You have decreased the area over which the force is applied