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Year 8 Biology
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Year 8 Chemistry
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Year 8Physics
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Unit
8A: Food and Digestion
 In
this unit pupils learn:
- about different foods and how they can be combined to produce a
balanced diet
- how food is broken down by digestion so it can be used by the body,
for energy, growth and repair
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Unit
8E: Atoms and Elements
 In
this unit pupils:
- learn that the huge range of materials is made from a relatively small
number of elements
- learn that each element is composed of one sort of atom only
- explore the characteristics of some elements
use the particle model to describe what happens when elements combine
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Unit
8I: Heating and Cooling
 In
this unit pupils:
- recognise the need for a temperature scale
learn to distinguish between heat (as energy) and temperature
- learn about mechanisms of heat transfer: conduction, convection and
radiation, and apply this to familiar contexts
- learn about expansion and change of state in solids, liquids and gases
- use the particle model to explain conduction, convection and change
of state
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Unit
8B: Respiration
 In
this unit pupils learn:
- how cells are supplied with the materials they need for respiration
- how cells in animals and plants release energy
that the process of respiration is similar in all cells
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Unit
8F: Compounds and Mixtures
 In
this unit pupils:
- distinguish between elements and compounds and how they are represented
by symbols and formulae
- recognise chemical change as a process in which atoms join together
in new ways
- distinguish between compounds and mixtures
- distinguish between chemical reactions in which new compounds are
formed and the formation of mixtures
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Unit
8J: Magnets and Electromagnets
 In this
unit pupils:
- identify magnetic materials, make a magnet and test the strength of
a magnet
- use the concepts of a magnetic field, a permanent magnet and an electromagnet
- investigate factors affecting the strength of an electromagnet
- explain the working of a number of devices that use magnets and electromagnets
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Unit
8C: Microbes and Disease
 In
this unit pupils:
- learn that micro-organisms share the characteristics of other living
things
- find out about growing micro-organisms to make products, and about
the role of micro-organisms in infectious diseases
- learn about the body's defence systems and how immunisation can protect
against microbial infections
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Unit
8G: Rocks and Weathering
 In
this unit pupils:
- learn about rock texture as one of the key characteristics of different
rock types
model rock texture
- learn about the processes of weathering, erosion, transportation and
sedimentation
- relate processes, eg evaporation and dissolving, involved in rock
formation to processes observed in other contexts
- consider processes operating on different timescales
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Unit
8K: Light
 In this
unit pupils:
- build on their knowledge of light and its effects
learn how we see objects
- represent light as a ray and use this concept to explain reflection
and refraction
- find out about the origin of coloured light and the appearance of
coloured objects
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Unit
8D: Ecological Relationships
 In
this unit pupils:
- study a habitat in detail and learn how:
organisms can be identified and sizes of populations compared
- feeding relationships can be modelled quantitatively
- living things within a community influence each other and are affected
by the environment
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Unit
8H: The Rock Cycle
 In
this unit pupils:
- learn about the major rock-forming processes
- learn how rock-forming processes are linked by the rock cycle
- use the concept of rock texture as one of the key characteristics
of igneous, sedimentary and metamorphic rocks
- relate processes observed in other contexts, eg crystallisation, to
processes involved in the rock cycle
- consider processes operating on different timescales
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Unit
8L: Sound and Hearing
 In this
unit pupils:
- build on their knowledge of sound and hearing
explain how sound travels through media
- give an explanation of how the ear works, find out
- about the harmful effects of loud noise and how loud noise can be
reduced
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