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What we will do What we will learn 9C 09 Poutū-te-Rangi 2017
Preliminaries, including the quick quiz: HF How to start well Revisit the idea of a RESULTANT FORCE – and look at the first two of Sir Isaac Newton’s 3 rules for moving things How to lead into NCEA2 Physics Revisit the comparison of gravity here on Earth with the Moon & Mars and… How to make the most of the difference between mass & weight Write down some useful definitions How to match ideas and words carefully The NAMES of the four forces found on moving objects How to make sure everyone has the same idea in their heads when talking Investigate friction: what is it, how is it measured and WHY there are two values What static and dynamic friction are, what causes them, how they are measured and how to investigate fairly using “Mythbuster Methods” (fair testing of data) Friction: when is it a helper, when is it a nuisance. How to increase it, how to decrease it. Friction: helper AND hindrance Examples of friction being increased and/or decreased
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9C’s Cool Questions What makes thunder? – Hori
Do tall buildings make thunder? – Travis Does lightning come from the ground? – Flynn Does lightning have to strike before thunder happens? – Jayden P
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Sample only HW item Skills practiced
Scipad pages but not 72, 73, 84-89 Due Zenday 37th of Octember Electrical Circuits Sample only
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The Elements we need to know
H Hydrogen He Helium Li Lithium Be Beryllium B Boron C Carbon N Nitrogen O Oxygen Page 1 of 4
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F Fluorine Ne Neon Na Sodium Mg Magnesium Al Aluminium Si Silicon P Phosphorus S Sulphur/Sulfur Page 2 of 4
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Cl Chlorine Ar Argon K Potassium Ca Calcium Fe Iron Zn Zinc Cu Copper Mn Manganese Page 3 of 4
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Ni Nickel Ag Silver Au Gold Hg Mercury Pt Platinum Pb Lead U Uranium Ra Radium Page 4 of 4
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No. Test 1 Test 2 Test 3 Test 4 … 1 2 3 4 5 : 18 19 20
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Name Mass Weight on Earth (g=10) Weight on the Moon (g=1.7) Weight on Mars (g=3.8, sometimes rounded to 4)
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Terms Descriptions Net Force The resultant force (what is left over) Newton The unit for force Weight The measure of the force created when gravity acts on an object Balanced Forces Describes the forces acting on a stationary object (or one going in a straight line at an even speed) Unbalanced Forces Describes the forces acting on an accelerating object
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