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Year 6 Revision booklet. One sheet per topic Mind map, note or questionnaire type form Some links to the internet For a general revision site go to: http://www.bbc.co.uk/schools/ks2bitesize/science /. 6A. Plants make oxygen and use carbon dioxide Animals make carbon dioxide and use oxygen

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year 6 revision booklet
Year 6 Revision booklet
  • One sheet per topic
  • Mind map, note or questionnaire type form
  • Some links to the internet
  • For a general revision site go to:
  • http://www.bbc.co.uk/schools/ks2bitesize/science/

Year 6 Revision booklet

slide2

6A

Plants make oxygen and use carbon dioxide

Animals make carbon dioxide and use oxygen

Plants and animals are interdependent

Polar bear adaptations

Streamlined body for strong swimming

Interdependence

& Adaptation

Thick White Fur for camouflage and warmth

Sharp Claws for digging burrows and catching fish

Adapting to the environment increases an organisms chance of survival

Plants need :

Oxygen, heat and water to germinate,

to grow they also need light (to make their food) and nutrients for strong growth

A Food Web is many connected food chains

A Food Chain shows what eats what.

(The arrow shows into whose mouth the food goes.)

Grass  RabbitFox

Year 6 Revision booklet

slide3

6B

All Micro-organisms do MRSGREN

(Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition)

Yeast is a

micro-organism.

For yeast to perform its life processes, it needs water, warmth and

food (sugar).

We make dough rise by the carbon dioxide produced by when yeast respires.

Microbes are tiny! 10 or 20 would fit onto the very tip of a needle!

Micro-Organisms

Microbes or Germs

(bacteria & viruses)

Good microbes:

Make beer, wine, cheese & yoghurt

Bad microbes

Cause flu, tooth decay, chickenpox and food poisoning

Word List:

Bacteria- Tiny living organism

Virus- Tiny organism which causes smallpox (which was cured by a Edward Jenner using a vaccination)

Germ- General term for bacteria or Virus

Year 6 Revision booklet

slide4

6C

More About Dissolving

Stir, grains of sugar into hot tea for a quick sweet drink!

Factors which affect how solids dissolve

  • Dissolving is a Physical (Reversible) Change
  • It creates a mixture. You can separate mixtures using:
  • Coloured dyes- Chromatography (each colour separated)
  • Insoluble solids/ liquid – Filtration (gets the solid)
  • Soluble solids/ liquid – Evaporation (gets the solid)
  • Soluble solids/ liquid – Distillation (gets the liquid)
  • Many liquids mixed – Fractional distillation (eg Crude oil)

Making a salt (solute) & water (solvent) mixture by dissolving table salt (sodium chloride) in water. The result is a clear colourless SOLUTION.

A copper sulphate (solute) & water (solvent) mixture is a clear blue SOLUTION.

  • Sand is insoluble in water and can be removed from water by filtration.
  • To separate salt & sand mixture:
  • Add water to mixture – salt dissolves
  • Filter –removes insoluble sand
  • Evaporate – removes water
  • White salt is left behind!

To see how changes of state occur, go to:

http://www.footprints-science.co.uk/flash/states.swf

Year 6 Revision booklet

slide5

Heat

The Fire

Triangle

Fuel

Oxygen

Reversible & Irreversible Changes

6D

Chemical (Irreversible) Changes

Burning or Combustion

Cooking

Neutralising (vinegar & bicarbonate)

A process making new substances with new properties ( e.g. Solid + Liquid makes a gas, or 2 liquids mix and change colour!)

Physical (Reversible) Changes

Evaporation: Liquid  Gas

Condensation: Gas  Liquid

Melting: Solid  Liquid

Freezing: Liquid  Solid

Subliming: Solid  Gas

Subliming: Gas Solid

Dissolving solid into a liquid

Word List

REVERSIBLE: Able to be changed back to the way it was before

IRREVERSIBLE: Cannot be changed back to the way it w as before.

BURNING: To set something on fire (combustion). This is also oxidation as oxygen from the air is necessary for burning.

DISSOLVING: When a solid substance ‘disappears’ in a liquid

SEPARATION:A method used to sort materials which have somehow become mixed up.

Fire is an irreversible change

Year 6 Revision booklet

slide6

Forces in Action

6E

Upthrust

Friction

Thrust

Air resistance

Nessie

Thrust = Friction = Constant speed

Thrust > Friction = Speeding up

Thrust < Friction = Slowing Down

Weight

Heavy ocean liners float because the upthrust from the weight of water displaced equals the weight of the liner!

Forces are measured in Newtons

Weight

Graph showing how Nessie’s speed changes when she falls out of a plane reaches a constant speed (220m/s) and then her parachute opens so she slows down to 30m/s!

Forces can only:

1 Change a thing’s direction

2 Change a thing’s shape

3 Slow a thing down

4 Speed a thing up

Speed (m/s)

Year 6 Revision booklet

Time (secs)

slide7

6F

How We See Things

Light is reflected off objects into our eye

The sun is the major LIGHT SOURCE .

Other light sources are light bulbs and fire.

Light travels in straight lines with an arrow for direction

Light reflects best of shiny smooth objects like a mirror.

In a mirror left appears right and vice versa. This is LATERAL INVERSION

Transparent

Periscopes enable you to see above or below and uses two mirrors at 45°

A B C

C

B

A

Mirror

Translucent

Mirrors at 45°

Opaque

Shadows change as the object is moved nearer to or farther from the screen.

Near the screen – dark, sharp shadows

Near the candle – light fuzzy shadow

Year 6 Revision booklet

slide8

6G

Electricity: Changing Circuits

+

A Series Circuit

‘A’ is smaller

A

+

Know your symbols

Cells , Bulb, Ammeter

Voltmeter, Switch (open), (closed)

Resistor, Variable Resistor, Fuse

Diode

A Parallel Circuit

‘A’ is bigger

A

Electricity is a flow of charge

To see how you can affect the brightness of bulbs in a circuit go to:

http://www.bbc.co.uk/schools/scienceclips/ages/10_11/changing_circuits.shtml

Year 6 Revision booklet

slide9

6G

Enquiry into Environmental Issues

How do I frame a question?

What is a fair test?

Why do I repeat an experiment several times?

What measurements should I make?

How should I record my results (table or graph)

What type of graph (bar chart or line graph)?

A Bar Chart A Line Graph

Discontinuous variableContinuous variable

Year 6 Revision booklet