Energy, Substances And Working Scientifically

Question 1

Independent variable?

Answer 1

A variable that you change.

Question 2

Dependent variable?

Answer 2

The one you measure

Question 3

Control variable?

Answer 3

Variable kept the same

Question 4

Random error?

Answer 4

Things you have no control over

Question 5

Systematic error?

Answer 5

Problems with the equipment of method you used

Question 6

Accurate?

Answer 6

Close to the true value

Question 7

Anomalies?

Answer 7

Results that do not fit the pattern

Question 8

Energy?

Answer 8

The ability for something to do work

Question 9

Seven energy types?

Answer 9

Nuclear, elastic, electromagnetic,kinetic, gravitational,chemical, thermal

Question 10

Renewable?

Answer 10

An energy source that can be replaced and will not run out

Question 11

Fossil fuel station?

Answer 11

Fuel is burnt to make steam which spins a turbine which turns a generator to produce electricity

Question 12

Particle?

Answer 12

A very tiny object like a atom or a molecule

Question 13

Liquid?

Answer 13

Particles move freely past each other cabinet be compressed

Question 14

Solid?

Answer 14

Particles are close togethor
Cannot be compressed

Question 15

Gas?

Answer 15

Fast moving and spread out
Can be compressed

Question 16

Particles always…

Answer 16

Move

Question 17

Atom

Answer 17

The smallest particle of an element

Question 18

Element

Answer 18

A substance made up of only one tiny atom

Question 19

Molecule

Answer 19

Two or more atoms chemically bonded togethor

Question 20

Compound

Answer 20

Substance made from two or more elements chemically bonded togethor

Question 21

Mixture

Answer 21

Two or more substances mixed togethor but do not react togethor

Question 22

Solute

Answer 22

A solid that can dissolve in a solvent

Question 23

Solvent

Answer 23

A substance that dissolves another substance

Question 24

Chromatography

Answer 24

Method for separating soluble substances from one another

Question 25

Crystallisation

Answer 25

Used to separate a soluble solid from a liquid

Question 26

Moving particles

Answer 26

Particles move faster as the temperature goes up

Question 27

Conserved

Answer 27

Energy can not be created or destroyed only transferred

Question 28

Work done?

Answer 28

Energy transferred 

Question 29

Mechanical work

Answer 29

Forces and waves

Question 30

Electrical work =

Answer 30

Electric currents

Question 31

Electromagnetic radiation equals

Answer 31

Light

Question 32

Heating equals

Answer 32

Conduction and convection

Question 33

What is power measured in?

Answer 33

Watts

Question 34

Power equals

Answer 34

Energy transferred / time

Question 35

P =

Answer 35

E/t

Question 36

Name two nuclear fuels

Answer 36

Uranium and plutonium (Both of which are radioactive metals)

Question 37

Fossil fuels

Answer 37

Formed from the remains of an ancient plants or animals. Examples of coal, crude oil and natural gas.

Question 38

Biofuels

Answer 38

Any fuel taking from living or recently living organisms?

Question 39

Wind

Answer 39

A turbine uses the force of wind

Question 40

Wave

Answer 40

Waze are used to make a floating generator, move up and down

Question 41

Hydroelectric

Answer 41

Uses the power of floating water to turn turbines

Question 42

Tidal

Answer 42

Traps water from each high tide behind a barrage, the high tide can then be released into see-through turbines

Question 43

Solar

Answer 43

Solar cells and solar panels are the sons energy to generate electricity or heat water

Question 44

Geothermal

Answer 44

You just some energy from hot rocks beneath the earths surface to turn turbines

Question 45

Particle model

Answer 45

Away to think about how substances behave, in terms a small, moving particles

Question 46

Gas pressure

Answer 46

Caused by collisions of particles of the walls of the container

Question 47

Density

Answer 47

How much matter that is in a particular volume or how close the particles are?

Question 48

Evaporate

Answer 48

Change from liquid to gas at the temperature surface of a liquid at any temperature

Question 49

Boil

Answer 49

Change from a liquid to a gas all the liquid when the temperature reaches boiling point

Question 50

Condense

Answer 50

Change of state from gas to liquid when the temperature dropped to the boiling point

Question 51

Melt

Answer 51

Change from solid to liquid when the temperature rises to the melting point

Question 52

Freeze

Answer 52

Change from a liquid to a solid when the temperature drops to the melting point

Question 53

Sublime

Answer 53

Change from a solid directly into a gas

Question 54

Melting point

Answer 54

Temperature when a solid becomes a liquid

Question 55

Boiling point

Answer 55

Temperature when a liquid becomes a gas

Question 56

Solution

Answer 56

Mixture formed when a solvent dissolves a solute

Question 57

Solubility

Answer 57

A measure of how much is substance, dissolves in a certain volume of solvent

Question 58

Filtration

Answer 58

Separating substances using a filter to separate an insoluble solid from a liquid

Question 59

Density (g/cm3) =

Answer 59

mass (g) / volume (cm3)

Question 60

What will An object less dense than water do?

Answer 60

Float

Question 61

Mrs gren

Answer 61

Movement reproduction sensitivity growth respiration excretion nutrition