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CBA 1B Review
1. What is a Qualitative Observation? Give 2 examples.
Using the 5 senses, texture, color, material, condition. Ms. Taylor has
a purple jacket. It has a soft lining in the sleeves.
2. What is a Quantitative Observation? Give 2 examples.
A measurement with numbers and SI units. Mass - 49.2g or distance
– 102cm
3. What is the formula to calculate Density? Density = mass / volume
4. If the Density of a substance 2.7 g/cm^3. What is the Volume of this
substance if its Mass is 8.1 grams? Volume = mass / density
V = 8.1/2.7
V = 3cm^3
5. A meter stick/ruler is used to measure length or distance.
6. A graduated cylinder is used to measure volume.
7. A Stop watch is used to measure time.
8. What scientific tool would be used to best view microscopic things?
Microscope
9. Models are used to study things that are hard to see, dangerous to
observe, or no longer exist.
10. What are some limitations to a model of the solar system?
not the same materials, many objects cannot be represented, not actual
size, cannot represent atmosphere or gravity
11. A Line graph shows changes over time.
12. A Circle graph shows parts of a whole.
13. A Bar graph shows comparisons between data.
14. The table below shows average male life expectancy. What can you
conclude by looking at the table? What type of graph could you use to
graph the information?
As the years increase, average life expectancy increases, we should use a
line graph
YEAR
1900
1920
1940
1960
2000
AVERAGE LIFE EXPECTANCY
48
56
62
67
74
15. Make an excellent graph using TAILS using the following information:
PERIOD
1941-1950
1951-1960
1961-1970
1971-1980
1981-1990
1991-2000
Number of Hurricanes making
Landfall
10
2
7
3
3
6
16. The rock cycle & water cycle are examples of a conceptual model.
These models can be used to simplify complex relationships. One limitation
of this model is that it may be overly simplified and may not represent a
true relationship that exist in a relationship. This can also lead to
misconceptions.
17. Simulations are used to test designs in a controlled environment.
They are used to show how an object or system works. Procedures
planned for space are always simulated on earth first. To help improve
vehicle safety, crashes are simulated in controlled environments.
18. Equations, graphs, Chemical formulas are examples of Mathematical
models.
19. Volume is anything that has mass and takes up space.
20. Mass is the measure of the amount of matter in an object.
21. Weight is the measure of gravitational pull on an object.
22. Calculate the Volume of a rectangular solid with a Length of 9cm,
Width of 4cm and Height of 5cm. What is the formula? Volume = length x
width x height V = 9 x 4 x 5 V = 180cm^3
23. How to you measure volume of an irregular solid using a graduated
cylinder?
Fill a graduated cylinder with water that will cover an irregular object, record
the measurement, drop in the object, record the new water measurement,
subtract the new level from original level
24. How would you measure the mass of a rock using a triple beam
balance?
zero out the balance, place the object on the pan, slide the riders until the
pointer is back on zero, add the riders on the beam, record the mass