TOPIC: FORCES
SUBTOPIC: AIR RESISTANCE
NAME:
DATE:
GRADE:
INSTRUCTIONS: Answer all questions.
ACTIVITY -MEASURING THE EFFECT OF AIR RESISTANCE ON SHEETS OF
PAPER WITH DIFFERENT SHAPES
Paper shape
Flat paper unfolded sheet (A)
Tightly crumpled paper
Paper folded in half
(6)
Effects of Air Resistance
Time taken to fall a distance of three feet
(s)
TABLE SHOWING THE EFFECTS AIR RESISTANCE OF THREE SHEETS OF
8”x14” PAPER WITH DIFFERENT SHAPES
1.
Obtain three sheets of blank paper (8”x14”)
2.
Drop a flat sheet of paper (8”x 14”) from a distance of three feet
3.
Use the stopwatch/ timer to determine how long it takes for the paper to reach the
ground.
4.
Record the time in the table.
5.
Crumple the second sheet of paper into a tight ball and drop it from a distance of three
feet.
6.
Repeat steps 3 and 4.
7.
Fold the third sheet of paper in half and drop it from a distance of three.
8.
Repeat steps 3 and 4.
Questions
1. Which shape paper took:
a. the longest time to fall? ____________ b. the fastest time to fall ? _______________
(2)
2. Suggest why the different-shaped papers fell at different speeds.
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
______ (2)
TOTAL MARKS: 10 MARKS