SCIENCE PERFORMANCE-BASED ASSESSMENT
Grade 7 A&B
Due date: Friday, 11th November 2022
This assessment is divided into two sections evaluating you according to criteria C and A, which
aim at marking your ability to process data and evaluate results and your scientific knowledge
and understanding.
Specific strands are defined along with questions.
Strands
Level achieved
Strand A (i)
Strand A (ii)
Strand C (i)
Strand C (ii)
Strand C (iv)
Strand C (v)
Your full name: ………………………………………………………………………………
You will have to attach your handwritten report to this assessment paper with all questions
numbered properly.
SECTION 1. Criterion C: Processing and evaluating
Choose a journey you make regularly – maybe the journey to school each day, or somewhere
you stay during the school holidays.
Using a timer (such as your phone or a watch), measure the time for each stage (10) of the
journey. Include all the stages – even walking to the car, waiting at the traffic signals on your
bicycle, turning at a corner or a roundabout, passing a reference place.
Using an online route planner or a journey app on your portable device, estimate the distance you
travel in each of the stages of your journey. (Think! What distance do you travel while you are
waiting?)
Strand C/i. The following question will assess how you present collected and transformed data.
Page 1 of 2
1. Plot a journey graph for your journey
2. Calculate average speed for each interval and plot a speed-time graph.
Strand C/ii. The following question will assess how you interpret data and outline results using
scientific reasoning.
Interpret the journey graph above using these guiding questions:
3. What was the total distance you travelled?
4. Which part of your journey took the longest time?
5. Which part of the journey was the fastest? Explain how you can deduce this from the
graph.
6. Which part of the journey was the slowest? Explain how you can deduce this from the
graph.
7. What happens on the journey graph when you are waiting, stationary?
Strand C/iv. This question will assess how you discuss the validity of the method
8. Evaluate your journey graph- how accurate is it as a representation of your journey?
Strand C/v. This question will assess how you describe improvements or extension to the method
9. Is there anything it misses out?
SECTION 2. Criterion A: Knowing and understanding
Strand A/i. The following questions will assess how you outline scientific knowledge
Look again at your speed-time data and graph. Interpret the data and graphs to solve the
questions below.
10. State the times between which the greatest acceleration occurred. Explain how you
determined this from your speed-time graph.
11. State whether the acceleration was ever zero. If so, between which times did this occur?
Explain how you determined this information from your speed-time graph.
Strand A/ii. The following question will assess how you apply scientific knowledge and
understanding to solve problems set in familiar situations and suggest solutions to problems set
in unfamiliar situations.
12. Calculate the greatest acceleration in your journey.
13. State whether the acceleration was ever negative in your journey. Describe your motion
when this happened. Outline how this looked – or, if it did not occur, how it would look –
on your speed-time graph.
All the best!
Mr Patient
Science Teacher
Page 2 of 2