into 6 groups and set up 6 bases in the classroom for the 6 experiments.
1 and 4 should be at or beside the sink.
gets to do each experiment so 12 balloons will be needed.
If time does
not permit each group may carry out the assigned experiment and
then report back to the class.
Experiment 1- Air takes up space :1 bottle plunged
right side up into water and then tilted so that the water trickles
in. Finding: Air comes out in bubbles because the air in the bottle
has to get out of the bottle so that the water can get in.
2 - Air takes up space: 1 Plasticine wrapped around the stem
of a funnel and put in neck of a container 2. Ensure seal is airtight
3. Pour water ½ way up the funnel. Water cannot enter the bottle
4. Use nail to pierce plasticine. Air can now escape. Finding: Water
will only go into the container if the air inside has somewhere
3- Air exerts pressure: 1. Two table tennis ball place 6cm.
apart 2. Take a straw and blow at the space between the 2 balls.
Findings: The balls move closer. By blowing, the air between, the
balls were forced away. Since there was a reduction in the pressure,
they moved toward one another.
4 - Air exerts pressure 1. Tumbler to be ¾ filled 2. Put
card over tumbler, the glossy side faces the water. Then invert.
After a few moments let go of the card. Findings: Card should stay
in place as the air under the card is exerting pressure equal to
that of the water.
5 - To show that air has weight 1. Two balloons to be blown
up knotted and tied with string 2. Suspend a metre stick from a
table with the string 3. Tie the 2 balloons on opposite ends of
the metre stick so that they balance 4. Burst 1 balloon with a pin.
Findings: Deflated balloon is lighter than inflated one, so metre
6 - To show that air resists objects as they fall: 1. Stand
on table or chair and drop 1 large and 1 small piece of paper at
the same time. Finding: The smaller piece will hit the ground before
the larger piece because it has smaller surface area. 2. Drop one
horizontally and the other vertically Finding: The piece dropped
vertically hits the ground first because surface area is very small
and doesn't resist the fall.
children to take photos using the digital camera. Display in classroom
for revision purposes. Other 6th class may be invited to a presentation
of science experiments at a later stage and digital photos can be
used to enhance understanding.