Trimester 2 Review

Question 1

Bernoulli’s Principle

Answer 1

states that the pressure of a fluid decreases when the speed of that fluid increases

Question 2

Buoyancy

Answer 2

An upward force exerted by fluid that opposed the weight of a partially or fully immersed object

Question 3

Direction of a buoyant force

Answer 3

upward

Question 4

Factors that affect buoyancy

Answer 4

the density of the fluid and the volume of the fluid displaced

Question 5

Archimedes Principle

Answer 5

States that a body totally or partially immerse in a fluid is subject to an upward force equal in magnitude to the weight of the fluid it displaces

Question 6

Pascal’s Principle

Answer 6

States that when pressure is applied to a fluid in a closed container, the pressure increases by the same amount everywhere in the container

Question 7

Thermal Energy

Answer 7

energy in the form of heat

Question 8

Conduction

Answer 8

the process by which heat is transferred from the hotter end to the colder end of an object

Question 9

Conductors

Answer 9

materials that transmit energy

Question 10

Insulators

Answer 10

materials that do not readily conduct electricity or heat

Question 11

Thermal equilibrium

Answer 11

when temperatures balance out or heat stops flowing

Question 12

convection

Answer 12

when heat is transferred by movement of a heated fluid such as air or water

Question 13

Convection current

Answer 13

a current in a fluid that results from convection

Question 14

Radiation

Answer 14

the emission or transmission of energy in the form of waves or particles through space or through a material medium

Question 15

Solar energy

Answer 15

radiant energy emitted by the sun

Question 16

sound energy

Answer 16

energy released by vibrations that can be heard by living things

Question 17

electrical energy

Answer 17

energy related to forces on electrically-charged particles and the movement of those particles

Question 18

Celsius to Fahrenheit formula

Answer 18

(C x 1.8) + 32= F

Question 19

Fahrenheit to Celsius formula

Answer 19

(F - 32) x 5/9= C

Question 20

What temperature does water freeze in Celsius and Fahrenheit?

Answer 20

F: °32
C: °0

Question 21

What temperature does water boil in Celsius and Farenheit?

Answer 21

F: °212
C: °100

Question 22

What happens to molecules when they freeze?

Answer 22

energy of the molecules decreases and they gain potential energy

Question 23

How do particles in solids move?

Answer 23

They vibrate but do not move from place to place

Question 24

Examples of conduction

Answer 24

Heating a pot on a stove, touching a hot seatbelt in the summer

Question 25

Examples of conductors

Answer 25

various metals

Question 26

How do particles in gases move?

Answer 26

They vibrate and move freely at high speeds

Question 27

Examples of insulators

Answer 27

plastics or rubbers

Question 28

What happens to molecules when heat is applied?

Answer 28

molecules gain kinetic energy and move faster

Question 29

Examples of radiation

Answer 29

microwaves from an oven, x-rays, gamma rays

Question 30

How do particles in liquids move?

Answer 30

Particles are close together and move with random motion throughout the container

Question 31

Real world example of Pascal’s Principle

Answer 31

hydraulic lift

Question 32

Real world example of Archimedes Principle

Answer 32

a ships that is launched sinks into the ocean until the weight of the water it displaces is just equal to its own weight

Question 33

Real world example of Bernoulli’s principle

Answer 33

air flowing past the top surface of an aircraft wing moving faster than air flowing past the bottom surface