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8B science > Unit 1(topics4-6) > Flashcards

Unit 1(topics4-6) Flashcards

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1
Q 
Flow rate
       /       \
     ----------
   /       |      \
--------------
A

/ V \
———-
/ Q X T \
————–

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2
Q 
Density
       /       \
     ----------
   /       |      \
--------------
A

/ M \
———-
/ D X V \
————–

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3
Q

The viscosity of gas——-as it is heated.

A

Increases

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4
Q

Gases flow more—–than liquids.

A

Easily

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5
Q

The viscosity of liquids—–as they are heated

A

Decreases

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6
Q

Buoyant force is measured in…

A

Newtons

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7
Q

Swim bladders on submarines are called…

A

Ballast Tank’s

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8
Q

Definition: Viscosity

A

The thickness or thinness of a fluid.

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9
Q

Definition:Viscous

A

High viscosity

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10
Q

Definition: lubricant

A

Used for minimizing friction.

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11
Q

Definition:Flow rate

A

How fast something flows

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12
Q

Definition:Density

A

The amount of mass in a certain volume

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13
Q

Definition:Mass

A

The amount of matter in a substance

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14
Q

Definition:Volume

A

The amount of space occupied by a substance.

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15
Q

Definition:Weight

A

The force of gravity exerted on a mass.

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16
Q

Definition:Force

A

Anything that causes a change in the motion of an object.

17
Q

Definition:Gravity

A

The attractive force between masses, causes objects to be attracted to earth.

18
Q

Definition:Buoyancy

A

The tendency to rise or float on a liquid

19
Q

Definition:Buoyant force

A

The upward force exerted on objects submerged in or floating on a fluid.

20
Q

Definition:Floating

A

Remaining suspended in a fluid

21
Q

Definition:Average density

A

Mass divided by Volume(Swim bladder)

22
Q

Definition:Neutral Bupyancy

A

Gravity=Buoyant force, when they are equal.

23
Q

Definition:Archimedes Principle

A

Objects submerged in water displace water

24
Q

Another way to define viscosity is the…

A

Resistance to flow.

25
Q

Resistance to flow creates…

A

Internal friction.

26
Q

Viscosity is a_______of all fluids.

A

Property.

27
Q

Density is the_____per___________of a substance

A

Mass

Unit volume.

28
Q

Density is a way of expressing a___________________.

A

Mass to volume ratio.

29
Q

The density of solids is usually expressed in…

A

G/cm*3

30
Q

There are_____mL in 1L.

A

1000

31
Q

3 factors affecting buoyancy are…

A

Density
Surface area
Shape

32
Q

Life jackets______a persons average density

A

Lower

8B science (11 decks)

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