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Forces and Motion — Free MYP1 Sciences Practice Questions
1QuestionAdvantages and Disadvantages of FrictionConcept Practice
2 marks~3 minCriterion A
A child pushes a heavy box across a carpet and then across a smooth floor.
a
Identify which surface creates more friction. [1]
b
Describe why the box is harder to push on a rough surface than on a smooth surface. [1]
Solutions
2QuestionAdvantages and Disadvantages of FrictionConcept Practice
2 marks~3 minCriterion B
A toy car is rolled across three surfaces: carpet, tile floor, and sandpaper. The distance the car travels on each surface is measured.
a
Identify the independent variable in this investigation. [1]
b
Identify the dependent variable in this investigation. [1]
Solutions
3QuestionAdvantages and Disadvantages of FrictionConcept Practice
3 marks~5 minCriterion A
The diagram shows a person rubbing their hands together to warm them up.
a
Identify the type of force acting between the hands when they are rubbed together. [1]
b
Describe how rubbing your hands together produces heat. [1]
c
Give one example of a situation where friction between two surfaces is useful, and one example where it is a problem. [1]
Solutions
4QuestionConstant Speed vs Changing SpeedConcept Practice
2 marks~3 minCriterion B
A student rolls a toy car along a flat surface. She records how far it travels every 2 seconds.
| Time (s) | 0 | 2 | 4 | 6 | 8 |
|---|---|---|---|---|---|
| Distance (cm) | 0 | 10 | 20 | 30 | 40 |
a
Identify the independent variable and the dependent variable in this investigation. [1]
b
Name one variable that should be kept the same to make this a fair test. [1]
Solutions
5QuestionDrawing Graphs from DescriptionsConcept Practice
2 marks~3 minCriterion A
A distance-time graph has two axes. The horizontal axis is labelled Time (seconds) and the vertical axis is labelled Distance (metres).
a
Identify the axis that shows distance. [1]
b
Describe what the slope of a straight line on this graph tells you about the object's movement. [1]
Solutions
6QuestionConstant Speed vs Changing SpeedConcept Practice
2 marks~3 minCriterion D
A car's cruise control keeps the car moving at the same speed without the driver pressing the gas pedal.
a
State what cruise control does to keep the car's speed steady. [1]
b
Describe one situation where cruise control would not be safe to use. [1]
Solutions
7QuestionCalculating Speed Distance TimeConcept Practice
2 marks~3 minCriterion B
A student rolls a ball down a ramp. She changes the height of the ramp each time and measures how far the ball rolls.
| Ramp height (cm) | 10 | 20 | 30 |
|---|---|---|---|
| Distance ball rolls (cm) | 25 | 50 | 75 |
a
Identify the independent variable in this investigation. [1]
b
Identify the dependent variable in this investigation. [1]
Solutions
8QuestionSolving Word Problems with Speed and TimeConcept Practice
4 marks~6 minCriterion C
A student walks 600 m from home to school in 12 minutes. She walks for 8 minutes, stops for 2 minutes to talk to a friend, then walks the rest of the way.
a
Identify the total distance and the total time for the journey. [1]
b
Calculate the student's average speed for the journey using:
Give your answer in metres per minute (m/min). [1]
Give your answer in metres per minute (m/min). [1]
c
The student's speed was not the same the whole way — she stopped in the middle. Describe one way that average speed is useful for this journey and one way it does not give the full picture. [2]
Solutions
9QuestionCalculating Speed Distance TimeConcept Practice
4 marks~6 minCriterion A
A toy car travels from the start (0 cm) to the finish (40 cm) in 8 seconds.
a
State the distance the car travels. [1]
b
Calculate the speed of the car. Use the formula , where is speed, is distance, and is time. Show your working. [2]
c
A second car travels the same 40 cm but takes 10 seconds. Describe how the speed of the second car compares to the speed of the first car. [1]
Solutions
10QuestionCalculating Net Force on an ObjectConcept Practice
2 marks~3 minCriterion A
Two children push a box from opposite sides. Child A pushes with a force of 5 N to the right. Child B pushes with a force of 3 N to the left.
a
Calculate the net force acting on the box. [1]
b
Using the terms net force and unbalanced force, describe the direction the box will move. [1]
Solutions
11QuestionCalculating Net Force on an ObjectConcept Practice
2 marks~3 minCriterion B
Students push a toy cart and record what happens.
| Number of people pushing | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|
| Speed of cart | does not move | moves slowly | moves faster | moves even faster | moves very fast |
a
Identify the independent variable in this investigation. [1]
b
Identify the dependent variable in this investigation. [1]
Solutions
12QuestionCalculating Net Force on an ObjectConcept Practice
2 marks~3 minCriterion A
A box has two forces acting on it: a push of to the left and a push of to the right.
a
Calculate the size of the net force acting on the box. [1]
b
State the direction of the net force. [1]
Solutions
13QuestionFriction and Air ResistanceConcept Practice
5 marks~8 minCriterion C
Sam pushes a toy block across carpet and then across a smooth floor using the same force for 3 seconds each time.
On carpet, the block moves 6 cm.
On the smooth floor, the block moves 12 cm.
On carpet, the block moves 6 cm.
On the smooth floor, the block moves 12 cm.
a
State which surface caused the block to move the shorter distance. [1]
b
Describe why the carpet slows the block down more than the smooth floor does. [2]
c
Sam's friend says, "All surfaces make a pushed block move the same distance." Compare the two results and explain whether the friend is correct. [2]
Solutions
14QuestionApplied Force Normal Force and TensionConcept Practice
2 marks~3 minCriterion D
A toy car sits on a flat table without falling through.
a
Identify the force that stops the car from falling through the table. [1]
b
Describe why furniture designers need to think about this force when making tables and chairs. [1]
Solutions
15QuestionGravitational Magnetic and Electrostatic ForcesConcept Practice
2 marks~3 minCriterion B
The diagram shows three arrangements of two bar magnets.
Arrangement 1: N facing N
Arrangement 2: N facing S
Arrangement 3: S facing S
Arrangement 1: N facing N
Arrangement 2: N facing S
Arrangement 3: S facing S
a
State whether the magnets attract or repel in each arrangement. [1]
b
Describe one rule that explains the behaviour in all three arrangements. [1]
Solutions
16QuestionApplied Force Normal Force and TensionConcept Practice
2 marks~3 minCriterion A
The diagram shows a toy car being pushed across a flat floor. A child's hand pushes the car to the right. Arrow A points to the right. Arrow B points straight up.
a
Identify which arrow shows the applied force on the car. [1]
b
Describe what Arrow B represents and explain why it points upward. [1]
Solutions
17QuestionDefinition and Effects of Balanced ForcesConcept Practice
3 marks~5 minCriterion B
A class plays tug-of-war. The table below shows the number of students on each side of the rope and whether the rope moved.
| Left side (number of students) | 4 | 5 | 4 | 3 |
|---|---|---|---|---|
| Right side (number of students) | 4 | 4 | 3 | 5 |
| Rope moved? | No | Yes | Yes | Yes |
a
Identify the round in which the rope did not move. [1]
b
Describe what the data shows about when the rope moves. [1]
c
Compare what happens to the rope when the forces are balanced and when they are unbalanced. [1]
Solutions
18QuestionDefinition and Effects of Balanced ForcesConcept Practice
4 marks~6 minCriterion C
The diagram shows a book sitting still on a table. Two forces act on the book: gravity pulls it down and the table pushes it up.
a
Name the downward force acting on the book. [1]
b
Describe what the two forces are doing that keeps the book still. [2]
c
A friend says: "If I push down on the book, it will still stay still because forces always balance." Do you agree? Explain why or why not. [1]
Solutions
19QuestionDefinition and Effects of Balanced ForcesConcept Practice
2 marks~3 minCriterion A
The diagram shows a book resting on a table. Arrow A points downward from the book. Arrow B points upward from the table.
a
Identify which arrow shows the force the table pushes up on the book. [1]
b
Describe what this upward force does to the book. [1]
Solutions
20QuestionReducing Friction in MachinesAssessment Practice
5 marks~8 minCriterion C
A student drags a 2 kg block across four surfaces using a spring scale. The pulling force needed to keep the block moving at a steady speed is shown below.
| Surface | Pulling force (N): |
|---|---|
| Smooth wood | 4 |
| Sandpaper | 10 |
| Oiled metal | 2 |
| Metal with ball bearings | 1.5 |
a
Identify the surface with the lowest friction force. [1]
b
Describe what the pulling force tells you about the friction force when the block moves at a steady speed. [2]
c
A student claims: "Ball bearings always reduce friction more than oil." Compare the results for oiled metal and metal with ball bearings, and explain whether the data fully supports this claim. [2]
Solutions
21QuestionDrawing Graphs from DescriptionsAssessment Practice
4 marks~6 minCriterion C
A friend walks 60 metres to a shop, stops there for 10 seconds, then runs back home. A distance–time graph is drawn using straight lines.
a
Name the shape of the line on the graph while the friend is stopped at the shop. [1]
b
Describe how the walking line and the running line look different on the graph. [1]
c
Describe one way the straight lines do not show what the friend's movement is really like. [2]
Solutions
22QuestionUnderstanding Acceleration IntroductoryAssessment Practice
2 marks~3 minCriterion D
A child rides a bicycle down a gentle slope and notices the bicycle speeds up on its own.
Describe one real-world situation where knowing that a steeper slope causes greater acceleration helps people make a safer choice. [2]
Describe one real-world situation where knowing that a steeper slope causes greater acceleration helps people make a safer choice. [2]
Solutions
23QuestionCalculating Net Force on an ObjectAssessment Practice
3 marks~5 minCriterion D
A child pushes a toy car with a force of 5 N to the right. Friction pushes back with a force of 2 N to the left.
a
Calculate the net force acting on the toy car. [1]
b
Describe what friction does to the motion of the toy car. [1]
c
On a real carpet, friction is not always the same. Describe one way this is different from what the model assumes, and explain how it affects the car's motion. [1]
Solutions
24QuestionDefinition and Effects of Unbalanced ForcesAssessment Practice
4 marks~6 minCriterion D
In a tug-of-war, one team pulls the rope with a force of to the left. The other team pulls with a force of to the right.
a
Identify which direction the rope moves, and state the size of the net force. [1]
b
Describe why the rope moves in that direction. Use the words "balanced" or "unbalanced" in your answer. [1]
c
In real life, one team member slips on the grass. Describe how this changes the forces on the rope compared to when both teams had a firm grip. [2]
Solutions