Measure the particulate concentration inside and outside your home. To do so, trace the outline of a loonie onto a piece of cardboard to create your sample area. Smear a thin layer of petroleum jelly or butter on the sample area. You will have two samples, one from inside and one from outside your home. Ideally put them about 1.5 metres above the ground or floor.
The one outside should be sheltered as much as possible from rain. When you handle your samples, make sure that you do not touch the sample area. Put them up once you get home today, and bring them along for the next lab. Write down when you put them up and when you took them down; it needs to be at least 24 hours. When transporting them to school, put them in a container that protects the sample surface.
2a. Once in lab, use a magnifying class and count the number of particles found on the sample area. A particle is any speck on the sample area. Record the number of particles from Which location trapped more particulate matter?
(1)2c. How do you explain this?
(3)2d. Did the results surprise you, and why?
(2each sample. Provide some information on your sample
