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UNIT I EXAM 2009

Matching
 
 
a.
Independent Variable
n.
Data
b.
Dependent Variable
o.
Scientific Method
c.
Line Graph
p.
Experimental Control
d.
Bar Graph
q.
Variable
e.
Dial-O-Gram
r.
Flow Chart
f.
Title
s.
Independent Investigation
g.
Graduated Cylinder
t.
Procedure
h.
Balance
u.
International System of Units
i.
Beaker
v.
Meter
j.
Triple-Beam Balance
w.
Mass
k.
Hypothesis
x.
Volume
l.
Experiment
y.
meniscus
m.
Analyze
z.
Prefix
 

 1. 

the amount of matter in an object.
 

 2. 

is the version of the metric system which has been established by the international Bureau of Weights.
 

 3. 

the specific techniques used in conducitng a particular experiment.
 

 4. 

changes that occur in an experiment that are directly caused by the experimenter.
 

 5. 

investigating a problem individually.
 

 6. 

not to be confused with a scale, this device is used to measure the mass of objects not weight.
 

 7. 

an affix that is added in front of the word.
 

 8. 

a cylindrical tube that measures the volume of a liquid.
 

 9. 

a balance that is used for larger scientific objects and measures up to 2500g of mass.
 

 10. 

a schematic step-by-step solution to a problem or process.
 

 11. 

a balance that has a dial that measures to the nearest one hundredth of a gram.  Used for objects up to 300 grams.
 

 12. 

a scientific container that is used to measure the volme of a liquid.
 

 13. 

used to hold the conditions uniform or constant under which an ivestigation is carried out.
 

 14. 

a collection of facts from which conclusions may be drawn.
 

 15. 

describes and explains the graph or chart.
 

 16. 

the base unit of length in the metric system.
 

 17. 

the amount of space an object takes up.
 

 18. 

the step by step process by which scientists investigate hypotheses using experiments.
 

 19. 

changes due to the independent variable, which is typically represented on the vertical axis.
 

 20. 

the act of conducting a controlled test or investigation.
 

True/False
Indicate whether the sentence or statement is true or false.
 

 21. 

It is not important to leave your lab area clean and clutter-free.
 

 22. 

Only wear eye protection when performing an experiment in that deals with an open flame.
 

 23. 

There is no need to read the entire lab before you start, just read it as you go.
 

 24. 

Keep hair and clothes loose during an experiment.
 

 25. 

Always report spills and keep glassware away from the edge of the table.
 

 26. 

Always handle glassware that has been exposed to heat with your bare hands.
 

 27. 

Be aware of what others are doing around you and do not point experiments towards them.
 

 28. 

Unauthorized experimentation is wonderful and encouraged.
 

 29. 

Absolutely no horseplay in the laboratory.
 

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 30. 

What is the arrow pointing at?
unit1exam2008_files/i0340000.jpg
a.
convex
c.
meniscus
b.
minature
d.
all of the above
 

 31. 

Observing the graduated cylinder below, determine how many ml are represented by each interval.

unit1exam2008_files/i0350000.jpg
a.
5 ml
c.
2 ml
b.
10 ml
d.
1 ml
 

 32. 

What step is missing in the Scientific Method?
unit1exam2008_files/i0360000.jpg
a.
Procedure
c.
collect Data
b.
Graph Results
d.
Form the Hypothesis
 

 33. 

unit1exam2008_files/i0370000.jpgHomer notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice will get rid of the green slime. Homer decides to check this this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the side treated with water.  However, the side treated with coconut juice had a cleaner appearance.

Indentify the Control in the experiment:
a.
coconut juice
c.
shower
b.
green slime
d.
water
 

 34. 

What is the dependent variable from Homer’s green slime experiment?
a.
coconut juice
c.
clean shower
b.
green slime
d.
water
 

 35. 

What is the independent variable from Homer’s green slime experiment?
a.
coconut juice
c.
shower
b.
green slime
d.
water
 

 36. 

Reading the metric ruler below, what is the length of the line?

unit1exam2008_files/i0400000.jpg
a.
7.2 mm
c.
7.2 dm
b.
72 cm
d.
72 mm
 

 37. 

unit1exam2008_files/i0410000.jpgSmithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.
Indentify the Control in the experiment:
a.
special juice
c.
group A
b.
group B
d.
Smithers
 

 38. 

What is the independent variable from the scenerio above?
a.
special juice
c.
group A
b.
group B
d.
Smithers
 

 39. 

In the lab “How many drops of water will fit on a penny?,” what was the thin film that formed on the surface of the water?
a.
cohesion
c.
tension
b.
surface cohesion
d.
surface tension
 

 40. 

Reading the metric ruler below, what is the length of the line?
unit1exam2008_files/i0440000.jpg
a.
6.4 mm
c.
64cm
b.
6.2 cm
d.
6.2 mm
 

 41. 

What is the base unit of measurement for mass?
a.
kilograms
c.
milligrams
b.
Liters
d.
grams
 

 42. 

What is the base unit for Volume?
a.
milliliter
c.
kiloliter
b.
gram
d.
liter
 

 43. 

What is the base unit for Length?
a.
Mass
c.
foot
b.
Liter
d.
meter
 

 44. 

Which of the two balances below is a triple beam balance?
unit1exam2008_files/i0480000.jpg
a.
A
b.
B
 

 45. 

In the Growing with Metrics Lab, we measured all body parts in:
a.
centimeters
c.
decimeters
b.
millimeters
d.
meters
 

 46. 

In the lab “How many drops of water will fit on a penny,” what were some possible errors that may have occured during the experiment?
a.
someone bumping the table
c.
different sized eye droppers
b.
counting incorrectly
d.
all of the above
 

 47. 

unit1exam2008_files/i0510000.jpgBart believes that mice exposed to microwaves will become extra strong (maybe he's been reading too much Radioactive Man). He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. he found that 8 out of 10 of the microwaved mice were able to push the block away. 7 out of 10 of the non-microwaved mice were able to do the same.
What was Bart’s Control?
a.
microwave
c.
mice that has not been exposed
b.
mice exposed to the microwave
d.
block of wood
 

 48. 

In Bart’s microwave experiment, what was his independent variable?
a.
the maze
c.
mice not exposed to the microwave
b.
block of wood
d.
mice exposed to the microwave
 

Completion
Complete each sentence or statement.
 

 49. 

A balance excludes what force? __________           
 

 

 50. 

4.5 cm = __________dm
 

 

 51. 

What instrument did we use to determine the mass of bolt in the mix and match mass lab?
 

 

 52. 

512 m = _______ hm
 

 

 53. 

35 m = _________ mm
 

 

 54. 

How do you measure the volume of an irregular shaped object? (two words) ___________________
 

 

 55. 

In the SI system what is the base unit for temperature? _____________
 

 

 56. 

83.3 L = _________dkl
 

 

 57. 

Scientists use a graph to _____________ data.
 

 

 58. 

45 dm = _______ mm
 

 



 
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