controlled assessment hypothesis – the steeper the ramp the further the car will travel along the...
TRANSCRIPT
GHyland -july 2013
Controlled assessment
Hypothesis – The steeper the ramp the further the
car will travel along the table
Objectives:Complete the equipment and risks
sections of the controlled assessment
Hypothesis – The steeper the ramp the further the car will travel along the table
GHyland -july 2013
GHyland -july 2013
Think – equipment
Equipment needed Explain why it is used
1. Draw and label the diagram of the equipment set-up
2. Copy and complete the table.
Equipment Reason for choice
Variables summary
In any experiment there are 3 variables:
an independent (or input) variable is the thing that you change
a dependent (or outcome) variable is the thing that you measure
some control variables are the things that you MUST keep the same
Control variables
These are all the variables that must not change, to make sure it is a fair test.
Example 1
You must use the same elastic band all the time, and the same scale etc,so it is a fair test.
Investigating how a weight affects the length of an elastic band.
control variables PAIR SHARE.
•
The steeper slope the further the car will travel
GHyland -july 2013
List the control variables
Variable ©
Why it needs to be kept the same C +
How you will control it. B
stirring
End(c) Ghyland
1. What were the risks in your experiment? Add as many as you can think of to a copy of this spider diagram. (3)
End
GHyland -july 2013
Safety
• Think -1. What would a ruler do to an eye?• 2. protection? RISK How to manage it –
make it safe
GHyland -july 2013
Plan
Logical - order.How many slope heights?How will you measure the distance?Range?Repeats?
GHyland -july 2013
Primary evidence-Results table
Independent variable (units)X
Dependent variable (units)RESULTS Y
1 2 3 average
(c) Ghyland