2. Answers:
1. Ask question/Aim, What to
do/Method/Procedure, Results/What you
measured/data, Conclusion/What you learned
2. To make FAIR TEST:
i. Change something (Independent variable)
ii. Measure something (Dependent variable)
iii. Keep everything else the same (Controlled variable)
3. For results to be VALID
3. LESSON PURPOSE
1. Describing & writing the components
of scientific investigation
2. How important this is for learning &
answering answer questions in
science
8. Answers:
1. Thermometer
2. Long & short DIAMETER (using ruler)/
Circumference (using tape measure)
3. Must be kept the same:
balloons are same TYPE & SIZE
method of measuring size of balloons
same thermometer to measure temperature
experiment must be done on the SAME DAY so the weather
conditions will be the same for all measurements
10. Answers:
1.In table form
2.Proves that balloons expand & even
burst when temperature rises
3.As the temperature increased by
degrees, the size of the balloons
increased till they burst.
13. Answers:
1. Sieve/Strainer
2. Magnets
3. Evaporation – heat the liquid so it evaporates from
the mixture & leaves the solid behind
Filtering – the solid is removed from the mixture when
you pour the mixture through a filtering device ( ex. filter
paper) & the solid stays behind in the filter paper.
17. Answers:
1.Magnet
2.Add water & then filter the sand
out
3.Heat the solution of white crystals
to drive off the water & then they
would be left with the white crystals
19. Answers:
1. Bunsen burner/ evaporating
dish
2. Filtration, evaporation &
magnet
3. (a) still filter out the sand &
nails but the nails would tear
the filter paper
(b) Use magnet to get rid of the
nails.