PENDULUM Y7

What word describes an object that swings backwards and forwards?

At which point is the pendulum moving fastest?

• A

• B

• C

• All are the same

What word is used to describe the time it takes for a pendulum to swing from position A to B and back to A again?

Students measure the total time (Z) for 10 swings of a pendulum. What calculation should they use to find the time for one period (a single swing)?

• Z x 10

• Z/10

• 10/Z

• Z + 10

Students investigate three factors that might affect the period of a pendulum: the length of the pendulum, the mass of the bob, and the initial displacement. What is the name of the factor that is deliberately (with choice) changed in an experiment?

• Pendulum variable

• Dependent variable

• Independent variable

• Controlled variable

The student formulates a statement that predicts the expected outcome of the experiment. What is this statement called?

A student changes the mass of a pendulum bob to see how it affects the period of oscillation. Which variable is the dependent variable in this experiment?

• Mass of the bob

• Period of oscillation

• Distance the bob is pulled back

• Length of the strong

In a study on the effect of coffee on student test results, variables are key. The ​ (a)   variable is the amount of coffee consumed by each student, while the ​ (b)   variable is the test results. ​ (c)   variables, like type of coffee, time of day, and prior caffeine consumption, are kept ​ (d)   .

• independent
• dependent
• controlled
• constant

A student wants to know which type of fertiliser produces the most growth in tomato plants. Which of the following should be kept constant (controlled variable)?

• type of fertiliser used

• height of the plant

• variety of tomato plant

• number of leaves

As a pendulum swings down from the top position,​ (a)   is converted into ​ (b)   . As KE increases, the ​ (c)   of the bob increases. As the (d)   of the bob decreases, GPE decreases. ​ (e)   remains the same throughout.

• GPE
• KE
• speed
• height
• ME