All systems go
Why do sperm have tails
to swim to the egg
pH decreases towards 7
Give an advantage of renewable energy sources
No pollution
In the magnet experiment what type of energy is inputted to generate the electrical energy
kinetic energy
Describe what happens during mechanical digestion
in mouth chew food to break it down into smaller pieces
Name a lab acid
Hydrochloric, nitric, sulphuric
State the energy change in a electric fan
Electrical to kinetic
Name the part of the lungs labelled on the board
Alveoli
name given to the reaction of an alkali with an acid
neutralisation
State the energy change in a solar cell
Light to electrical
Digestive juices/saliva/enzymes/bile
Describe what happens to the diaphragm, ribs and size of the chest cavity when breathing in
Diaphragm goes down, ribs move up and out and chest cavity gets larger
pH range of an alkali
pH 8-14
What is the name given to heat transfer in a liquid or gas?
Convection
What happens to the reading on the meter if magnet is held stationary inside the coil?
reading would be 0
Give a health risk caused by smoking
Emphysema/chronic bronchitis/lung cancer
Describe how you would use pH paper to measure the pH of a solution
compare colour of indicator to chart and read the pH number
Three ways to increase the electrical energy produced by a magnet and coil.
- increase number of coils
- increase speed of movement of magnet
- increase strength of magnet
Where does fertilisation take place?