Answers to general science packet (starting with p. 14, The Nature of
Science)
1.
2.
3.
4.
5.
B
C
A
C
Science grows with new discoveries, each of which builds upon
earlier discoveries. Discoveries usually take many trials over many
years. The direction of research sometimes changes when society’s
needs change.
6. It was the first one that was practical.
7. C
8. Bad question – laws just describe what happens, theories try to
explain why
Review 2, p. 25
1. D
2. D
3. A (no chemicals are safe to injest, radioactive chemicals have far
more than just a diamond label, no label could list all the chemicals
you could safely mix with something like aluminum)
4. C (not one that’ll be asked)
5. B – eventually there is an accepted view of something like plate
tectonics
6. A – professional ethics are specific to a profession
7. C
Review 3, p. 37
1.
2.
3.
4.
5.
D
B
D
B
94.796 g /11.4 cm3 / = 8.32 g/ cm3 --- you can’t use more than 3
numbers in the answers because the volume only has 3 numbers, your
answer can’t be more accurate than the numbers going into it
6. B
7. B
8. Report your observations and exactly how you obtained your data so
other people can replicate your experiments and see if you’re right. If
you are right, then people can use your protocol (directions) to make
the medicine.
Set p. 48:
1.
2.
3.
4.
C
B
C
A constraint is something that determines what you cannot do. Cost is
often a constraint. For instance, we could make appliances that last
longer but they would be really expensive. Other times safety is a
constraint. Lead paint might work better in some ways, but it is too
dangerous to use.
5. A
Skip 6-7
8. You might need to change a design if new problems are discovered
(like with Toyota’s accelerator) or if society changes its needs or its
preferences.
Set p. 58:
1. C
2. A
3. B
4. D
5. C
6. advantages – kids less distracting to driver
disadvantage – people might drive longer and get more tired before they
take a break, movies in back might distract driver