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**Disclaimer**:
*InThinking* subject sites are neither endorsed by nor connected with
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### Forthcoming Workshops

#### Physics: A focus on internal assessment

IBDP Category 3

Berlin, Germany

18 to 20 October 2019

more info

#### Physics

IBDP Category 2

Berlin, Germany

14 to 16 February 2020

more info

Find all *InThinking* Workshops at www.inthinking.net

### School visits

If you are interested in **Chris Hamper** & **Emma Mitchell** visiting your school to work with teachers and/or students, please
**contact us**.

### Home-2-Home

The vacation home exchange service for the IB community.

*Feel at home when you travel the world.*

**www.home2home-inthinking.co.uk**

# Most popular

### Measurements and uncertainties14 December 2018

This topic is the first in the Subject Guide, and there are some aspects that will need to be tackled before your students can commence other physical concepts. For students who have not studied physics... more

### Activity teaching orderfree14 October 2019

The whole course can be delivered through the activities on this website, Chris has been doing it this way for some years. Here is his teaching order.In this practical the mass and diameter of different... more

### Activity: Mini investigationfree12 November 2018

In this activity you will perform an experiment related to a small bow and arrow made from a piece of plastic from an ice cream carton and a drinking straw. The bow is used for firing arrows so most experiments... more

### Activity: Measurement and uncertaintyfree16 September 2018

In this practical the mass and diameter of different balls of Plasticine will be measured in order to verify that the mass of a sphere is proportional to the cube of its diameter. This is a simple experiment... more

### Gravitational Fields15 December 2018

The myth is that Newton realised that an apple fell because of gravity but I don't think he was the first person to notice that an apple fell because it was pulled downwards. The big breakthrough was... more

### Problems: Projectile motion15 September 2018

1. A ball is thrown at 50ms-1 at an angle of 30°towards a raised area as shown in the picture. Calculate the range (final horizontal displacement) of the ball.2. An arrow is shot at a target as shown... more

### Problems: Velocity and speedfree15 September 2018

1. A car travels from A to B as shown on the map below. The distance from A –B is 50km and the car starts off at an average speed of 50kmhr-1 hoping to make the journey in 1 hour. After 20km the car... more

### Activity: SHM, energy and phase12 March 2019

Investigate other oscillations.Explore the changing energy in an oscillation.Sketch graphs of KE and PE vs time and position.Introduce phase difference.Simple harmonic motion is defined as motion where... more

### Activity: Electric potential1 October 2018

If a constant force moves a distance d in the direction of the force the work done is F x d. If we plot a graph of F vs x we can see that the work done is the area under the graph.This is also true if... more

### Activity: Generators and transformers21 September 2019

In this section we will be considering a rectangular coil rotating in a uniform magnetic field, this is best viewed in 3D.Consider a power station producing 100 MW of power at 30 kV, calculate: more

### Introduction to the sitefree14 August 2019

We hope that you will find the Getting started section useful if you are new to the IB, physics teaching or these resources. Returning subscribers are also advised to check out this area to make sure... more

### Analysis18 March 2014

Analysis of data is basically what we used to call data collection processing and presentation plus a bit of the evaluation. As with the other criteria this is a holistic assessment based on the whole... more

### Activity: Capacitancefree25 September 2019

First let us consider a metal sphere.You can see that the potential is proportional to Q, the ratio Q/V is called the capacitance of the sphere.Capacitance = Q/VUnits CV-1 or Farad (F) more

### Activity: Newton's 2nd law16 September 2018

First we will start with a simple statement that applies to bodies with constant mass:The acceleration of a body is proportional to the unbalanced force applied and inversely proportional to its mass. more

### Not a checklistfree13 October 2014

One of the advantages of the old system of internal assessment was that it was quite easy to produce a checklist for each criteria. This was also one of the aspects that the assessment team didn't like,... more

### Activity: Gravitational fields and potential16 September 2018

The Earths gravitational field is the region of space where a particle of mass will experience a force towards the centre of the Earth. Does this mean that the international space station is not in the... more

### Activity: Forces as vectorsfree16 September 2018

A push or a pullThe unit of force is the newton, 1 N is approximately the force required to hold a mass of 100 g.Imagine two strings attached to some object. Two forces can be applied to the object by... more

### Activity teaching order (Options)18 September 2019

The options contain some interesting physics but not all students have the same interest, most schools offer only one option so a student passionate in astrophysics might be disappointed to hear they... more

### Activity: Making a videofree14 December 2018

In this fun activity you are going to make a video explaining a physical concept e.g. Work.This is a group activity If you want to record real examples you will need a camera if you don't have one then... more

### Worked Solutions17 June 2010

The IB mark scheme gives the letters of the correct answers but not the complete solution. The examiners report gives some more details and statistics but again no worked solution. Here I have written... more

### How To guides21 December 2018

This site was first launched over 10 years ago. In that time:We always make sure that this site keeps up with the changes to the bigger picture so that you can concentrate on teaching your classes. more

### Activity: Electromagnetic induction30 October 2018

Take a magnet, move it in and out of a coil and observe the EMF induced across the coil.This can also be done with a simulationexercises on page 252Faraday's law multiple choice more

### Worked Solutions17 June 2010

The IB markshemes are essential for understanding how the marks are awarded but are not complete solutions, for that reason I decided to make my own with some comments in red. Due to copyright reasons... more

### Optional Practical: suvat (GeoGebra)free15 September 2018

In this exercise the mathematical modelling programme GeoGebra will be used to show how the motion of a particle is related to the equations of motion and vice versa. First you will need to download and... more

### Optional Practical: Angle of slopefree15 September 2018

In this practical the acceleration of a cart down a slope will be measured for different slope angles. By plotting a graph of the results a value for the acceleration due to gravity will be determined. more

### Optional Practical: Rolling ballfree15 September 2018

In this practical the motion of a ball rolling off the end of a ramp will be analysed using video. The video can either be taken with a camera or phone or using the webcam on the computer. To record using... more

### Activity: Satellites and escape speed16 September 2018

Have a look at this website spacebook.Fascinating isn't it. Don't spend too long looking at the satellites passing over your house we have work to do.Orbits don't have to be circular but since you haven't... more

### Practical: Verification of Boyles lawfree15 September 2018

In this practical the pressure of a sample of gas trapped in a syringe will be measured with a pressure sensor.Boyles law states that for a fixed mass of gas at constant temperature the pressure will... more

### Problems: Gravitational Potential15 September 2018

1. The moon is about 1/4 the diameter of the Earth and 1/81 of its mass. The distance between the moon and Earth is approximately 60 x radius of the earth. Sketch a graph of the variation of gravitational... more

### Logistics30 March 2014

This depends very much on when other deadlines are in your school but it can’t be too early as not enough of the course will have been covered and students with English as an additional language would... more

### Activity: Kirchoff's laws16 September 2018

Let's first consider a water pipe splitting in two.Now currents in wiresThe sum of the currents into a junction = the sum of currents out of the junctionImagine you are walking around a multistorey shopping... more

### Problems: Electrostatics15 September 2018

1. Three positively charged spheres +Q are placed at the corners of an equilateral triangle as shown. Show that if a 4th charged sphere of charge -Q/√3 is placed in the centre the charges will be in... more

### Problems: Gravitational fields15 September 2018

1. The diagram below represents two spheres of equal density placed a distance 18R apart. If the field strength at point P is zero show that r = 2R more