DefinitionsE

Click for each heading

then for the answer

Effort =results

Energy

• Is the ability to do work

• Units = joules (J)

What is work?

Echo

•Reflected sound

Question on Echo – think of there and back Speed = distance there +back

Time taken

Egestion

• Removal of

• Undigested and unabsorbed food

• (e.g. fibre) (from the body) (from large intestine, through rectum + anus)

Element

• All the atoms are the same • Listed on periodic table of elements• E.g Iron is Fe

Ecology

• Study of the relationship between

• Living things and their environment

Excretion

• Removal of the wastes of metabolism (chemical reactions) from the body

• Three organs =

• Lungs (CO2 and H2O)

• Kidneys (urine = urea, water, salt)

• *Skin (sweat =water and salt)

Electrolysis

• A chemical reaction caused by electricity

• Water split into hydrogen : oxygen (2:1)

ElectrolysisHydrogen

Oxygen

Negative Positive

NegativePositive

OxygenHydrogen

Egg

• Female sex cell or gamete

• Made in ovary • (both humans and plants)

Electron

• Negative particle in atom

• Orbits the nucleus in shells• How many – look at atomic number (small)

Enzyme

• Catalyst made in living cell

• Amylase changes starch to maltose

Earth wire

• Brings charge to earth

• Colour =yellow/green

• Safety

• Connected to TOP pin

Evaporation

• Liquid changes to a gas • Used to separate a soluble solid from a

liquid e.g. salt and water

A= salty water B = wire gauze C = salt D= beaker E = water

Environment

• Everything that surrounds an animal or plant

Electronic Configuration

• How electrons are arranged in shells

• E.g Sodium = 2,8,1 (11 electrons)

Electronics

• Control of electric current in circuits

Electroplating

• Coating one metal with a layer of another using electric current

• Reduces corrosion

• Improves appearance

• Jewellery coated with silver

Electrical Energy

• Energy in moving charges

Equilibrium

• Balance

• Three states = stable, unstable, neutral

• Do I know it??

• Energy

• Echo

• egestion

• element

• ecology

• excretion

• electrolysis

• Egg

•Electron •enzyme•Earth wire•evaporation•environment•Electronic configuration•electronics•electroplating•Electrical Energy