Friction: do and review | Science | Quizalize & Oak National Academy

Starter quiz

What is the name of the force that acts between objects that are moving, or trying to move, across each other?
- 'friction' ✓
How many variables should you change in a controlled investigation, such as in a comparative or fair test?
- '1' ✓
If the enquiry question is, 'Do different gloves create different amounts of friction?', which variable should be changed?
- The weight applied to the glove.
- The amount of force applied to pull the glove.
- The type of glove used. ✓
- The surface the glove is tested on.
Which of these is not a way in which scientists present results?
- graphs
- diagrams
- tables
- predictions ✓
Match the investigation type to the activity.
- identifying and classifying
  
  ⇔
  
  sorting food into healthy and unhealthy groups ✓
- observing
  
  ⇔
  
  measuring the temperature of a hot drink ✓
- comparative test
  
  ⇔
  
  comparing which type of paper makes the fastest aeroplanes ✓
In which direction does friction act on moving objects?
- In the same direction as the movement.
- In the opposite direction to the movement. ✓
- At a different angle to the movement.

Starting with the least, sort these surfaces in order of increasing amount of friction created when walking across them.
- 1
  
  ⇔
  
  ice
- 2
  
  ⇔
  
  wood
- 3
  
  ⇔
  
  grass
- 4
  
  ⇔
  
  gravel
Which of these is not a type of graph?
- scatter graph
- bar chart
- table ✓
- line graph
In which part of an investigation should you summarise the results?
- prediction
- method
- conclusion ✓
- introduction
What do scientists use test results for?
- to help them answer enquiry questions ✓
- to help them make predictions for further investigations ✓
- to help them choose equipment
- to help them draw conclusions ✓
What is this graph missing?
- data
- title
- axis labels ✓
- scale
Which of these types of data are best shown in a bar chart?
- data showing a change over time
- data showing the relationship between two variables
- data that can be grouped into categories ✓

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Scientists carry out investigations to measure and compare the amount of friction created between different surfaces.
The results from an investigation can be recorded in different ways, including tables and graphs.
The findings from an investigation can be summarised into a conclusion.
Objects experience more friction when moving across rough surfaces compared to smooth surfaces.
Test results can be used to make predictions to set up further investigations.

All graphs can be used to present all types of data.

Examples given of different types of graph and sample data.

Surface - The surface is the top or outside layer of an object or material.
Friction - Friction is a force that acts between surfaces.
Variable - A variable is something that can be changed, measured or kept the same in an investigation.
Conclusion - In a conclusion, scientists explain what the results show and what they mean.