Year 4 Revision
Your end of year exam will be on Thursday 21st May and it will cover everything we have done in Year 4.
When revising I would advise you to use your class books, the revision sheets and the web.
Useful sites
BBC KS2 bitesize at http://www.bbc.co.uk/schools/ks2bitesize/science/ - this is a useful site make sure you only revise the bits relevant to Year 4 using the list below and attempt the Activity, Revision Bites and Quiz sections.
www.brainpop.com is also useful, but restricted as there are only a few free resources.
Here is a list of topics we have covered.
Circuits and conductors
Symbols in circuits
How to make a circuit
Drawing a circuit correctly
Reasons why a circuit might not work – battery dead, bulb blown, bulb not screwed in, wires not connected
How to change the brightness of a bulb by changing number of bulbs or batteries
Using switches to control a circuit
Conductors and insulators of electricity – metals are conductors
Electrical safety – dangerous examples of electricity around home and how to avoid dangers
Moving and growing
Names of the major bones in the skeletons
Jobs of the skeleton – support, protection and movement
Bone growth and how we get bigger as we get older
Broken bones and which bones break easiest
Joint types – pivot, hinge and ball and socket joints
Muscles to move the skeleton – how muscles work in pairs to move our arms and legs
Keeping warm
How to keep things hot
How to keep things cold
More layers is better at insulating than 1 thick layer
What are the best materials for insulating and stopping heat escaping
How to slow down an ice cube melting
Using a thermometer to measure temperature
Solids and liquids
Differences between solids and liquids
Measuring volume of liquids using measuring cylinders
Examples of liquids and solids
Looking at candles and what happens when they are burning
Turning solids to liquids by melting – some things melt faster than others
Turning liquids to solids by freezing – e.g. ice candles – wax will melt when heated and then freeze again back to solid wax
Separating techniques for mixtures of solids and liquids
Using a magnet to separate iron and steel from other solids
Using a sieve to separate large solids from small solids or liquids
Filtering using filter paper to separate small undissolved solids from liquids
Evaporation to separate liquids from dissolved solids
Materials
Types of materials
Properties of materials and their uses
Classification and keys
Vertebrates and invertebrates – backbone or no backbone
Vertebrate groups – mammals, reptiles, birds, amphibians, fish.
What are the differences between these vertebrate groups.
Invertebrate groups – insects, arachnids, molluscs, crustaceans, worms
Differences between insects and arachnids - -number of legs, body parts etc.
Sorting animals using classification keys – yes/no questions on keys
Friction
Types of forces
Forces are measured in Newtons
Using and measuring with a newton-meter.
Friction can be useful and can be a problem
Friction of solids – what types of surface have most friction. Why this is useful or not.
Friction in liquids – which shapes cut through water the best, streamlining to decrease water resistance
Friction in the air – air resistance cause parachutes to slow down. The bigger the parachute the slower it falls.