Year 7 Term 2: Physical World- Forces
Check
ASSUMED KNOWLEDGE STAGE 3 OUTCOMES
ST3-6PW
describes how scientific understanding about the sources, transfer and
transformation of electricity is related to making decisions about its use
Date
□
ST3-7PW
uses scientific knowledge about the transfer of light to solve problems that
directly affect people’s lives
PW1 Change to an object's motion is caused by unbalanced forces acting on the object.
(ACSSU117)
4PW1a. identify changes that take place when particular forces are acting
□
Literacy activity (ESL focus): Define and describe.
Force
□
Provide examples of forces
□
□
□
□
Draw forces acting upon different objects
Classify Forces-Contact force and Field (non-contact) force
4PW1b. predict the effect of unbalanced forces acting in everyday situations
first-hand investigation(s): Measuring forces
Use a Newton metre to measure the force required to pull a block of wood over
various surfaces
Predict the effect of unbalanced forces acting in everyday situations
Eg :skateboarding forces, car accidents
Literacy: COSMOS. The Science behind Superheroes by Tim Dean: Issue 6
pg59. Read, review article and answer questions provided OR students
research for another related article. Students then write a series of questions
that MUST include 5 multiple choice, 2 identify, 2 describe, 1 explain
XT: Discuss the development of aeroplanes and how a wing works using forces
4PW1c. describe some examples of technological developments that have
contributed to finding solutions to reduce the impact of forces in everyday life,
eg car safety equipment and footwear design
Research task:
 Describe some examples of technological developments that have
contributed to finding solutions to reduce the impact of forces in everyday
life, eg car safety equipment (seat belts, airbags), motorcycle and pushbike
helmets and footwear design
4PW1d. analyse some everyday common situations where friction operates to
oppose motion and produce heat
Literacy activity (ESL focus): Define and describe.
friction
Define and describe examples of friction E.g. brake pads, dimples on footy ball,
Velcro, wheel bearings
□
□
□
□
□
□
□
□
□
Provide examples when friction is detrimental
PW1e. investigate factors that influence the size and effect of frictional forces
□
□
first-hand investigation(s): Measuring forces II
Compare the force required to drag shoes with different treads across a range
□
of surfaces. Use a blank piece of paper to shade the tread pattern of each shoe
for later comparison. Compare grass, road, cement, carpet, lino.
4PWadd1 investigate characteristics of specific forces in terms of size and
□
direction.
Research task:
investigate characteristics of specific forces in terms of size and direction
4PWadd2 investigate some simple machines, eg levers, pulleys, gears or
□
inclined planes
Research task:
investigate some simple machines, eg levers, pulleys, gears or inclined planes.
□
How have they contributed to society
first-hand investigation(s): simple machines
□
Design and provide examples of levers, pulleys, gears and inclined planes
4PWadd4 describe the scientific principles used in some traditional
technologies used and developed by Aboriginal and Torres Strait Islander
□
peoples
Research task:
traditional technologies used and developed by Indigenous peoples [ATSI] Eg.
□
boomerang, woomera
PW2 The action of forces that act at a distance may be observed and related to everyday
situations.
4PW2a.use the term 'field' in describing forces acting at a distance
□
Literacy activity (ESL focus): Define and describe.
non-contact force, field, magnetic, gravity, electrical
Define the term ‘field’ as relating to forces eg. magnetic, gravitational and
electrical
□
□
4PW2b.identify ways in which objects acquire electrostatic charge
Literacy activity (ESL focus): Define and describe. electrostatic force
How can objects acquire electrostatic force?
List examples of electrostatic forces
4PW2c. describe the behaviour of charged objects when they are brought
close to each other
first-hand investigation(s): Electrostatic forces
Conduct a range of experiments to demonstrate the effect of electrostatic
forces:
 Balloon and hair or wall
 Ebonyi and Perspex rods with water from tap or paper
Describe the behaviour of charged objects when they are brought close to each
other
□
□
□
□
□
□
4PW2d. investigate everyday situations where the effects of electrostatic
forces can be observed, eg lightning strikes during severe weather and dust
storms
Research task:
Describe everyday situations where effects of electrostatic forces can be
observed such as lightning strikes during severe weather, volcanic eruptions
and dust storms
4PW2e. identify that the Earth's gravity pulls objects towards the centre of the
Earth (ACSSU118)
Describe gravitational force and outline the factors that affect the strength of
the field eg. size and distance
Skills- graph gravity on different planets in our solar system
4PW2f. describe everyday situations where gravity acts as an unbalanced
force
Describe everyday situations where gravity acts as an unbalanced force eg.
falling objects, tides
4PW2g. distinguish between the terms 'mass' and 'weight'
Literacy activity (ESL focus): Define and describe.
mass and weight
Examine the mathematical relationship and units. Note the units are force units
therefore weight is a force.
first-hand investigation(s): mass v’s weight
Compare the mass and weight of a range of objects. Discuss how these would
vary between planets.
4PWadd5 trace the history of pendulum-motion studies and its connection
with timekeeping and setting standards of length
Group research task:
Trace the history of pendulum motion studies and its connection with
timekeeping and setting standards of length
first-hand investigation(s): pendulum movement
Compare the effects of mass and length on the period of swing
XT: Research –do all objects fall at same rate
XT: Orbits and weightlessness
4PW2h. describe the behaviour of magnetic poles when they are brought close
together
Literacy activity (ESL focus): Define and describe.
magnetic force
List examples of magnetic forces
How magnets affect each other? Explain what is meant by ”Magnetic field”?
first-hand investigation(s): Magnetism
Magnets and iron filings. Draw the fields that appear
4PW2i. investigate how magnets and electromagnets are used in some
everyday devices or technologies used in everyday life
Research task:
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
investigate how magnets and electromagnets are used in some everyday
devices or technologies used in everyday life Eg. Find directions with a
compass and discuss how they have contributed to society
4PWadd7 research current ideas about the Earth's magnetic field and its
effects
Research task:
Research current ideas about the Earth's magnetic field and its effects
TOPIC TEST
□
□
□