Name: _______________________

My Pals are Here! Primary 5&6 Science - Interactions

Name: _______________________Class: __________Date: ___________

INQUIRY WORKSHEET

Theme: Interactions

Chapter 2:Types of forces

SINKING

Teaching strategy Investigating

Process skillsMeasuring, communicating, inferring

Time 1 hour

Stream Foundation and Standard

Materials: Trough, container, pebbles of the same size, water, ruler

Procedure:

1.Set up the following experiment. Using a ruler, record the value of d in cm.

2.Put some pebbles into the container and measure d. Refer to the tables below for

the number of pebbles.

3.(a) Repeat step 2 with increasing number of pebbles. Record your readings in the table below.

Number of pebblesd (cm)

0

2

4

6

(b) What conclusion can you draw from the data collected?

______________________________________________________________

(c) There are two forces acting on the container. Draw a diagram similar to the

one shown above and label the two forces.

INQUIRY WORKSHEET ANSWER

Theme: Interactions

Chapter 2:Types of forces

SINKING

3.(a) Results: The value of d should increase with increasing number of pebbles.

(b) As weight increases, the container sinks deeper.

(c) Diagram:

d

water

container

trough

water

container

trough

Weight of pebbles and container

Upward push by water

pebble

2009 Marshall Cavendish International (Singapore) Pte LtdBumper Pack

1