1. Every measurement has
a unit tied to it.
2. Physical quantities
are properties that can be measured.
3. The prefix milli- in
the metric system means 1/100 .
4. The Celsius degree is
larger than the Kelvin degree.
5. The melting point for
water is 0oC or 273 Kelvin.
6. The prefix micro- in
the metric system equals 1/1,000 .
7. The mass of an object
changes when it is moved.
8. A kilogram is smaller
than a pound.
9. A length unit in the
metric system is the liter.
10. The number 54.07
grams has two significant figures.
11. The number 41.526 +/-
0.0001 has five significant figures.
12. Exact numbers have an
infinite number of significant figures.
13. Rounding off 34.79
meters to one decimal place gives 34.8 m.
14. Multiplying 1.3 x
103 by 3.0 x 104 gives 3.9 x 107.
15. There are 60 seconds
in a minute, so in 4 minutes there are 2400 seconds.
16. The relation o F =
(1.8oF/
1oC)
x o C + 32 means
50oC
equals 122 oF
17. A calorie will raise
the temperature of one g of water by 1 o C. .
18. Metals have large
specific heats, that is why they conduct heat well.
19.Density is a property
that depends on the size of an object.
20. Specific gravity has
no units. |
