KS3+SPEED

Calculate average speeds, including through the use of timing gates. measure speed and calculate average speed

produce distance-time graphs interpret gradients on distance-time graphs interpret changes of gradient on distance-time graphs



[|Speed, distance-time graphs] from BBC GCSE bitesize [|Speed test] from BBC GCSE bitesize =Experiment on speed(20 marks)=

**Marking Criteria for Speed practical write up**
Aim: To calculate average speed by investigating the relationship between speed and a gradient of a distance and time graph. Hypothesis(1): Scientific reasoning/Background reasoning(1) Variables(3) Apparatus: Diagram(1): Method: Results(12) > Title, Labelled both axes with units, Proper scale and plotted data correctly, Legend, Line of best fit, Triangular method is shown to find the gradient. Conclusion(1): Analyse the distance vs time graph. 1. What does the gradient of your graph tell you? 2. What is the relationship between the gradient and speed? Evaluation(2): 1. Is your experiment fair? 2. How can you improve the experiment? Bibliography(1)
 * Table required with units(1)
 * Formula of speed presented and correct calculation(1)
 * Graphs plotted on graph paper attached(7):
 * Analysis: Interpret the distance vs time graphs(1)

Gear you up. You will run as fast as you can. You may need pants or shorts on Tuesday for G7 Ruby and on Friday for G7 Amber. Enjoy your running.

Qualitative graphing: Describing the motion of an object by recognising the shapes on its graph and interpret changes of gradient, not through calculations.
 * < 1. Describe what a specific type of motion looks like on D-T and V-T graphs.

2. Describe the shape of graph on how to plot one type of graph if given the other type ||< a. When the object is not moving b. When the object is moving at a constant velocity in the positive direction. c. when the object is moving at a constant velocity in the negative directon || consider acceleration and braking
 * Some tips for your report ** : Match the instructions where they fit.
 * 1 || List the steps that you followed to carry out the investigation. ||
 * 2 || This describes what the investigation is about and the date. ||
 * 3 || This is where you show other people the data that you have collected. ||
 * 4 || Often you will need to calculate some averages or percentages. ||
 * 5 || Summarise your data but don't explain it. ||
 * 6 || Describe the problem as a question. It may be useful to rewrite the__ title __ as a question.. ||
 * 7 || Draw a __ diagram __ to show how you will set up the materials; this must be done with a ruler where necessary and labelled with straight lines. ||
 * || Method 1, Diagram 7, Results tables 3, Discussion 5, Aim 2, Processed data table 4, Research question 6 ||

What is an acceleration? Write down your understanding from your research and make a poster. Include examples showing acceleration.

**Falling through the air**
Describe a speed against time graph for a falling parachutist. Explain what the terminal velocity is. Skydiving __**Task: Plot a speed against time graph of**__ __**a falling parachutist in the animation.**__ ( __**Graph**__ of terminal velocity during a parachute jump from absorblearning.com) understand the relationship between gravity and weight investigate gravity and the planets Gravity : Gravitational field strength. It varies depending on the mass of a planet. ex) Copy the table of the different gravitational field strength in solar system in your text p.212 Weight : Force of gravity. It is a force of attraction between masses. The gravitational force of an object depends upon their __ masses __ and the distance between them. It pulls things towards the __ centre __ of the mass. Mass: It shows how much substance is in an object. F = m x a || . where, || **F** is force of gravity. media type="youtube" key="E43-CfukEgs" width="560" height="315" BBC TWO [|Brian cox visits the world largest vacuum chamber] from youtube.com
 * m** is mass.
 * a** is the gravity ||