Scientific Method
Which of the following statements is an example of an observation?
A. Mr. Wilson's tests are hard because everyone fails.
B. David’s burgers are good
C. The Mona Lisa is the best painting ever created.
D. 20 students failed Mr. Wilson’s test
D. 20 students failed Mr. Wilson’s test
What is the unit of measure for mass?
gram
Convert the following measurement: 1000 cm = _______ m
A. 1
B. 10
C. 100
D. .001
B. 10
A wall measures 3 meters long, 4 meter wide, and 2 meters high. What is the area of the wall?
A. 24 meters squared
B. 12 meters squared
C. 9 meters squared
D. Cannot tell from this information
A. 24 meters squared
300 identical books are weighed. The total weight is 1525kg. Calculate the ave. mass of one book. _______ (keep 2 digits after the decimal in your answer)
Convert your answer to grams __________
1525 kg/300 =
Mass = 5.08 kg = 5080 g
When first entering a lab, what should you do with the equipment that is found on your table?
A. Whatever you want. B. Carefully move the materials in front of you
C. Do not touch it until you are told to do so.
D. Read the directions and immediately get to work
C. Do not touch it until you are told to do so.
What tool is used to find mass?
Balance
What is the most appropriate measurement of the amount of liquid in a lake?
A. mL
B. kL
C. cL
D. cg
B. kL
In order to calculate the density of an object, a scientist must find:
A. Volume and area
B. Volume and mass
C. Mass and distance
D. Mass and area
B. Volume and mass
25 tomatoes are weighed. The total mass is 453.6g. (keep 2 digits after decimal in your answer)
Calculate the average mass of one tomato. _______g Convert average mass to kg ________________kg
453.6/25 = 18.14 g
ave. mass of one tomato is 18.14g = .01814 kg
You think that putting the new tires on your car will make it accelerate faster. What would your hypothesis for this experiment look like?
A. If I put new tires on my car, then it will go faster because they have better traction.
B. If I put new tires on my car then it will go faster than it did before.
A. If I put new tires on my car, then it will go faster because they have better traction.
Volume can be expressed in what unit of measurement?
A. Grams
B. Meters
C. Centimeters
D. Centimeters cubed (cm3)
D. Centimeters cubed (cm3)
How many mL are there in 1 L?
A. 1
B. 100
C. 1000
D. .001
C. 1000
Which would have more density, a piece of wood with a mass of 250 grams or a piece of the SAME TYPE of wood with a mass of 1500 grams?
A. 250 grams
B. 1500 grams
C. Both are the same
D. Cannot tell from the information
C. Both are the same (it's still wood)
900 identical fish are weighed. The total weight is 28890cg. Calculate the average mass of one fish. _______cg Convert your answer to grams. _________g
28890cg/900 =32.1 cg
32.1 cg = .321 g
The last step in the Scientific Method says that you need to repeat the process over and over again. Why would you do this?
A. Because as a scientist, you like doing experiments.
B. To test your results and conclude that you will get the same results everytime.
C. You really don't have to do the experiment over again, but its a good idea.
B. To test your results and conclude that you will get the same results everytime.
To find the volume of an oddly shaped object, what scientific principle is used?
Water displacement
Which of the following is NOT a unit of measure for distance?
A. dkm
B. cm
C. mg
D. mm
C. mg
What is the volume of a box that is 10cm long by 12 cm wide, and 5 cm high?
A. 60 cm
B. 60 g/mm
C. 60 mL3
D. 60 cm3
D. 60 cm3
13 footballs are weighed and the total mass is 5850 g. Calculate the average mass of one football. ______g Convert your answer to milligrams ____________mg
5850/13= 450 g
450g = 450,000 mg
Something that you are testing is your ______ variable.
Independent
The metric system is based on what number?
A. 10
B. 100
C. 1
D. 247
10
A dip in the water level inside of a graduated cylinder is called a:
A. Air bubble
B. Broken graduated cylinder
C. Meniscus
D. Volume
C. Meniscus
A box weighs 2kg. The box is 8cm long by 8cm wide by 10 cm high. What is the density of the box? (find the volume first, then convert weight to cg)
312.5cg/cm3
30 notecards are weighed and the total weight is 39500 mg. Round up your answer. What is the average mass of one card? ________mg Convert to grams. __________g
Convert to kilograms _________kg
39500mg/30 = 1316.7 mg
13136.7 mg =13.1367g
13.1367g = .0131367 kg