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Sydney Technical High School Science Program 1

TOPIC 2 : 10 - IN GRAVITY'S GRIP YEAR2010-2012 Teaching Weeks : 7Term 1 Week 10 toTerm 2 Week 6

CONTEXT: Gravity is a force that attracts every object in the universe. An object resting on a desk ispulled down by gravity; a ball thrown upwards soon returns as gravity's grip drags it back to Earth. Gravityis a field force. Other forces are contact forces. In all cases a net force leads to accelerated motion. Isaac

Newton made the most significant contribution to our understanding of forces and motion including motionin space. In this unit we examine the nature of motion and the forces that cause changes in motion.

PRESCRIBED FOCUS AREAS : 5.2 Nature and Practice of Science

DOMAIN (KNOWLEDGE & UNDERSTANDING):5.6.2 Newton's Laws of motion 5.6.6 Gravitational force

DOMAIN (SKILLS):

5.13 Identifies a problem and independently produces an appropriate investigation plan 5.14 Undertakes first-hand investigations independently with safety and competence

5.15 Gathers first-hand data accurately5.16 Accesses information from a wide variety of secondary sources.

5.17 Explains trends, patterns and relationships in data and/or information from a variety of sources5.18 Selects and uses appropriate forms of communication to present information to an audience

5.19 Uses critical thinking skills in evaluating information and drawing conclusions

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Sydney Technical High School Science Program 3

COMMON KNOWLEDGE AND PROBLEM SOLVINGTEST

Knowledge 25 marksSkills 25 marks

Due Term 2Weeks 3/4

5.6.2a Students describe qualitatively therelationship between force, mass and

acceleration.5.6.2c Students relate qualitatively acceleration

to a change in speed and/or direction as a result

of net force

5.14a Students follow the planned procedure

when performing an investigation

Force and Motion

5. Students work in teams to experimentally investigate the

relationship between friction and acceleration of an object slidingdown smooth and rough inclined planes. Students analyse the resultsgraphically and draw appropriate and valid conclusions.

6. QTP: ConnectednessStudents gather, analyse and summarise textual informationconcerning the importance of frictional forces in our daily life anduse Newton's second law to describe the relationship between netforce, mass and acceleration. Students apply Newton's Second Law(F=ma) to a range of examples and situations.

Video 188High speed

car crashes5. ST10 p 876. ST10 p 88

6.6.2d Students analyse qualitatively common

situations involving motion in terms of

Newtons Laws.

5.6.6a Students distinguish between the terms

mass and weight5.16d Students summarise information from

identified oral and written secondary sources.

Launching into space

7. Students analyse textual information or data collected using theInternet to explain the concept of gravitational attraction (weight)and relate this force to the mass of the bodies Students analyse

tabulated or diagrammatic information concerning the variation ofgravity on the moon and other solar system planets.

Video 19 -Gravity

Video 85Space

EducationVideo W2Space Shuttle

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Sydney Technical High School Science Program 4

5.17g Students apply mathematical concepts

and computer based technologies to assist

analysis of data and information.

5.18d Students use symbols to express

relationships, including mathematical ones, and

appropriate units for physical quantities.

5.19g Students use cause and effect

relationships to explain ideas.

8. Students distinguish between the terms weight and mass andanalyse numerical examples by applying the equation W = mg .Students analyse examples of weight variation on Earth and otherplanets and apparent weightlessness in earth orbit. Reinforce theseconcepts by viewing and discussing a video on gravity.(Video 19- Gravity)

9. Use video footage of the flight of the Space Shuttle and other

rockets to demonstrate Newton's Third Law of action and reaction.(Video 85 Space Education; Video W2 Space Shuttle). Reinforcethese concepts using textual information to summarise informationon rockets and the Space Shuttle.

7/8 ST10 p101-102

9. ST10 p103-104

(B) Gifted and Talented EXTENSIONSyllabus Outcomes Learning Experiences Resources

5.13.3c Students describe ways to reduce therisk to themselves and others when working in

the laboratory or field.

5.19c Studentspredict outcomes and generate

plausible explanations directly related to

observations made

Students undertake a practical investigation of the action andreaction forces involving toy rockets and they use their observationsto make conclusions about the variables that influence range andheight of the rockets.

ST10 p 113-115

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