Grade+8+Physics+spring+2013

For Ilmiö translations and full IB criteria, click here

Word lists can be downloaded here:

8B - you will find the autumn 2012 lessons here

Your guiding question:  **Why do we move, or stay still ?** Area of interaction: **Human Ingenuity** (what you should know) || ==Resources== || ==Homework== || ==Deadline== || Forces as pushes and pulls: interactions between objects. Measuring forces using newtonmeters. The unit of force. Representing forces using arrows to show direction and size. || * explain how forces can be shown on diagrams as arrows with a size and direction || Read through your notes from the lesson to check you understand and read chapter 3, Vuorovaikutus ja voima. || For next lesson || 1. Objects carry on moving in a straight line unless other forces act 2. F=ma (we will study this later) 3. For every 'action' force there is an equal and oppostie 'reaction' Experiment - can a rubber band be used as a newton meter ? Stretching a rubber band and recording the extension. How can this information be used to make the rubber band into a newtonmeter so that forces could be measured? || * recall the main ideas which Newton's Laws illustrate This task will be assessed for criteria B,D,E and F. The criteria are available from the link at the top of the page - you need your username and password. The investigation will take two lessons, plus homeworks ||  || Task sheet
 * ==Week/date== || ==Activity== || ==Learning outcomes==
 * 1 2/1/13 || No lesson this week. ||  ||   ||   ||   ||
 * 2 7/1/13 || What are forces ?
 * draw force arrows on diagrams showing simple, everyday situations
 * measure forces using newtonmeters
 * correctly adjust the newtonmeters to measure horizontal and vertical forces || Ilmiö p.151-157
 * 3 14/1/13 || Newton's 3 laws.
 * safely carry out an experiment stretching a rubber band
 * record data accurately in a correctly labeled results table
 * plot data on a graph
 * draw a conclusion from the graph
 * explain how a scale will need to be calibrated before a device can be used to take measurements ||  ||   ||   ||
 * 4 21/1/13 || **Can salt be used to measure upthrust ?**An investigation which you will plan in pairs and carry out to find out if you the changing the concentration of salt in water will increase the upthrust of the liquid, and if this could be used to measure force.

Report writing frame || Complete the experiment report ||  || The types of equilibrium: stable, unstable and neutral Finding the centre of gravity of 'Finland' Use a cut out map of Finland, and hang it from three points. Mark on the vertical lines which pass through the centre of mass. Mark these on the map and where they cross should give the centre of mass. || * identifying the centre of gravity in symmetrical objects We found the centre of mass to be at Kärsämäki. || None set ||  || Friction - what is it; how does it affect sports. ||  ||  || To be emailed by the end of the lesson || 06.00 on Tuesday Feb 12th || Introduction to pressure - how deep do things sink in snow ? Experiment to investigate this.
 * 5 28/1/13 || As above. ||  || As above || Complete the experiment report || Paper copy or emailed attachment by Monday 4 February, 10.20 ||
 * 6 4/2/13 || Discussing balance and centre of gravity (mass)
 * explain why objects fall over, using the idea of centre of gravity
 * carry out an experiment to find where the centre of gravity is in a cardboard shape
 * evaluate the experiment || [[image:http://c1.wikicdn.com/i/mime/32/application/vnd.openxmlformats-officedocument.wordprocessingml.document.png width="32" height="32" caption="finland map.docx" link="file:karinparker/finland map.docx"]] [[file:karinparker/finland map.docx|finland map.docx]]
 * [|Details]
 * [[file:karinparker/finland map.docx|Download]]
 * 733 KB
 * 7 11/2/13 || Substituted lesson as I was sick.
 * [|Details]
 * [[file:karinparker/Gr 8 Physics Sport and Friction Assignment 2012.doc|Download]]
 * 34 KB
 * 8 18/2/13 || Recap friction

Calculating pressure and its units || * identify cases of high and low friction Pressure units ||  ||   ||
 * recall pressure = force/area
 * use the correct units for pressure, given the force in N and area in cm 2 or m 2
 * explain how snow shoes are useful for walking on soft snow
 * use data from an experiment to test the idea that pressure decreases as area increases. || Ilmiö chapter 5 Tiheys p. 167-172 Ilmiö chapter 7 Paine ja noste p.179-182
 * 9 25/2/13 || The Tortoise and the Hare - who was faster ?

Discussing speed; instantaneous speed, average speed; velocity. Vectors and scalars. Using graphs to show movement (distance-time and velocity-time). || * explain the difference between average and instantaneous speed Usain Bolt sprint data d-t graph Usain Bolt's 100m record, Berlin 2009 || p.185 Qn 8,10,12 || For next lesson ||
 * use the terms speed and velocity correctly
 * show movement on distance-time graphs and velocity-time graphs
 * perform simple calculations to find speed
 * convert between speed units: m/s and km/h || Ilmiö chapter1 p. 135 Uniform motion
 * 10 Ski break ||  ||   ||   ||   ||   ||
 * 11 11/3/13 || Accelerated motion

Using graphs to show acceleration. Calculations.

Ilmiö chapter 2 p.143

Discussion of 'Freefall': what is weightlessness when referring to orbits?

g forces.

Mass and weight. || * explain what is meant by acceleration
 * give the correct unit for acceleration(m/s 2 )
 * calculate acceleration
 * acc. = D v/ D t
 * objects fall to Earth with acceleration g
 * explain how weight and mass are different || Ilmiö chapter 2 p.143

You tube videos on g forces and Red bull races

http://www.youtube.com/watch?v=j8i04jBLI5I&feature=related

[]

http://www.youtube.com/watch?v=b_fL-JsnnoU&feature=related ||  ||   || Acceleration due to gravity on other planets; finding weights on other planets Kinetic and gravitational potential energy - what are they and how are they calculated ? Roller coasters and energy. || * explain how weight and mass are different
 * 12 18/3/13 || Continuing mass and weight.
 * calculate weights on other planets
 * calculate gravitational potential energy using mgh
 * calculate kinetic energy using 1/ 2 mv 2
 * explain why the loops on unpowered roller coasters decrease in height along the ride || [[file:Weight_around_the_solar_system_worksheet.doc]] ||  ||   ||
 * 13 25/3/13 || Power and work calculations || * use the formula work = force x distance
 * use the formula power = work/time
 * calcualte work and power, using the correct units, for a variety of situations such as lifting and pushing || Ilmiö chapter 8 Työ ja teho ||  ||   ||
 * 14 1/4/13 || No lesson ||  ||   ||   ||   ||
 * 15 8/4/13 || Lesson will swap with 8A: 8B go to geography ||  ||   ||   ||   ||
 * 16 15/4/13 || I was off sick so the substituted lesson invovled study from Ilmiö for revision, p.135-198 ||  ||   ||   ||   ||
 * 17 22/4/13 || Air resistance and falling - paper helicopters experiment || * investigate how air resistance affects surface area
 * draw a graph of data
 * make a conclusion based on the data recorded || [[file:paper helicopters.doc]] || Revision for the test ||  ||
 * 18 29/4/13 || Density calculations

Traffic safety - video and discussion on safety features in cars and how they reduce sudden energy transfer in crashes. || * recall density = mass/volume no notebooks are allowed. ||  ||   ||   ||   ||
 * use the density units kg/m 3 and g/cm 3
 * Calculate the density of regular and irregular objects
 * identify safety features on cars
 * explain how safety features reduce energy transfer in collisions ||  || Revision for the test ||   ||
 * 19 6/5/13 || Traffic safety task || * identify safety features on cars and in traffic regulations || [[file:MYP Gr 8 Physics Assignment Car Safety pairs.doc]] || Revision for the test ||   ||
 * 20 13/5/13 || TEST this week. This is NOT open book. So
 * 21 20/5/13 ||  ||   ||   ||   ||   ||
 * 22 27/5/13 ||  ||   ||   ||   ||