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Year 9 Biology
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Year 9 Chemistry
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Year 9 Physics
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Unit
9A: Inheritance and Selection
 In
this unit students learn:
- that characteristics are inherited and how this is used in selective
breeding
- why selective breeding is important
- about variations arising from environmental differences
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Unit
9E: Reactions of Metals and Metal Compounds
 In
this unit students:
- explore the properties of metals and non-metals
- learn that different acids react in similar ways with metals, with
metal carbonates and with metal oxides
- represent elements by symbols and compounds by formulae
- use word and symbol equations to describe these reactions
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Unit
9I: Energy and Electricity
 In
this unit students:
- explore a range of useful energy transfers and transformations
- discuss the use of electricity as a convenient way to transfer energy
to do useful things
- associate the concept of voltage with the transfer of energy in a
circuit
- investigate the voltage of cells
- study how electricity is generated, with reference to environmental
impacts
- use the principle of conservation of energy to identify ways in which
energy is dissipated during transfers
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Unit
9B: Fit and Healthy
 In
this unit students learn:
- how the human respiratory, digestive and circulatory systems interact
to maintain activity
- about the functions of the skeleton
- about ways in which diet, exercise, smoking and drugs affect health
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Unit
9F: Patterns of Reactivity
 In
this unit students:
- learn that although metals react in a similar way with oxygen, water
and acids, some react more readily than others
- establish and use a reactivity series for metals
- represent chemical reactions by word and/or symbol equations
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Unit
9J: Gravity and Space
 In
this unit students:
- learn about the gravitational pull between bodies; how it depends
on the masses of bodies and the distance between them
- relate the movement of planets around the Sun, and that of satellites
around the Earth, to gravitation
- study how artificial satellites are used to observe the Earth and
provide information about the solar system and the universe
- find out about space exploration
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Unit
9C: Plants and photosynthesis
 In
this unit students learn:
- about photosynthesis as the key process producing new plant biomass
- that the carbon dioxide for photosynthesis comes from the air and
that the water is absorbed through the roots
- that chlorophyll enables a plant to utilise light in photosynthesis
- about the role of the leaf in photosynthesis
- about the importance of photosynthesis to humans and other animals
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Unit
9G: Environmental Chemistry
In this unit students:
- learn that rocks, soils and building materials have a variety of chemical
characteristics
- learn that chemical weathering alters rocks and building materials
over time
- consider how the atmosphere and water resources are affected by natural
processes and the activity of humans
- consider how environmental conditions are monitored and controlled
- distinguish between different environmental issues
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Unit
9K: Speeding Up
 In
this unit students:
- use the concept of speed
- consider the relationship between forces (including balanced forces)
on an object, and its movement
- study the effects of water and air resistance on speed, and how streamlining
reduces these effects
- use ideas of balanced and unbalanced forces to explain the movement
of falling objects
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Unit
9D: Plants for food
In this unit students learn:
- about humans as part of a complex food web
- about factors affecting plant growth
- how management of food production has many implications for other
animal and plant populations in the environment
- to consider some of the issues involved in sustainable development
of the countryside
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Unit
9H: Using Chemistry
 In
this unit students:
- find out more about how chemical reactions can be used as an energy
source
- consider how chemical reactions are used to make new materials
- model chemical reactions as the rearrangement of atoms, and use the
model to explain that matter is not lost
- represent chemical reactions by word and/or symbol equations
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Unit
9L: Pressure and Moments
In this unit students:
- study pressure on solids and describe applications of this in everyday
appliances
- study hydrostatic pressure in fluids and describe an application,
eg hydraulic jack
- describe the operation of levers, including examples from the human
body, which depend on the turning effect of a force
- learn about the principle of moments
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