Planning Investigations
What is the first step in planning an investigation?
Identifying the question to be answered.
What simple tool can you use to show how a ball moves when pushed?
A ruler or a tape measure to track the distance it rolls.
What do you need to observe when conducting an experiment on swings?
Observe and note the swing's motion and distance.
How do you know if your investigation was successful?
By comparing the results to the predicted outcome.
How do you choose a variable to test in an experiment?
Select a variable that directly affects the outcome you are studying.
Demonstrate how friction affects a wagon when you pull it.
Show how different surfaces affect the ease of pulling the wagon.
What must be kept constant in an experiment testing pushes on a wagon?
The surface and the force applied should remain constant.
What are the criteria for evaluating the results of your experiment?
Accuracy, repeatability, and whether the data answers the question.
What tools would you use to measure the force applied in an experiment?
A force meter or a spring scale.
Demonstrate how the angle of a ramp changes how far a ball rolls.
Use a protractor to set different angles and measure the roll distance.
How do you ensure accurate measurements in your investigation?
Use calibrated tools and repeat measurements for consistency.
How can results be used to make further predictions?
Use the results to predict outcomes under different conditions.
How do you determine the number of trials to conduct in an experiment?
Based on the variability of the results and the resources available.
Show how different weights on a wagon affect the effort to pull it.
Add different known weights and measure the force needed to pull them
What safety precautions should be taken during physical experiments?
Ensure all participants are aware of their roles and avoid hazards.
How do you interpret conflicting data in an experiment?
Analyze possible errors, consider variability and retest if necessary.
How do you formulate a hypothesis for an investigation on motion?
Predict how changes in force will affect the speed or direction based on prior knowledge or research.
Demonstrate the effect of combined forces on the motion of a swing.
Combine different pushes and pulls to see the net effect on swing path.
How would you document and analyze the data collected from pushing a ball?
Record video for review, measure distances, and use software for analysis.
How could the investigation be improved for more accurate results?
Increase the number of trials, refine measurement techniques, or adjust variables.