Measurement Experiments

Science 210

Name:________________________________________________________________

1. Height measurement:

a) Measure your lab partner’s height in inches to the nearest 1/16^th of an inch. Express your answer as a decimal:

Height = _________________________________________

b) Repeat a), but now measure your partner’s height in centimeters, to the nearest millimeter. Write your answer on the board in front of the class.

Height = ________________________________________

c) Divide the value for part b) by the value for part a). Write your answer on the board in front of the class.

Ratio = __________________________________________

d) From the values listed on the board, find the average height of the students in the laboratory class.

Average height = _______________________________________

2. Area measurement:

a) Find the area of the floor in our laboratory room in units of ft². (Hint: each tile is 9 inches by 9 inches). Write your answer on the board.

Area of room = _________________________________

b) Find the area of the lab room floor in units of M².

Area of room = ___________________________________

c) If the cost of carpet is $35 per square yard, how much will it cost to carpet the lab room?

Cost = _____________________________________________

3. Speed measurement

a) In the hallway, measure the walking speed of your partner in units of ft/sec. (Hint: the tiles are one foot by one foot). Write your answer on the board in front of the class.

Speed = ___________________________________________

b) What is your partners walking speed in units of miles/hr?

Speed = ___________________________________________

c) How many days will it take her or him to walk to San Francisco?

Time = ______________________________________________

4. Mass measurement

In class there is a bag of M&M’s. Your goal is to estimate how many M&M’s are in the bag. You will be given a balance, a bag and some M&M’s to assist you. The group that gets the closest gets to keep the M&M’s.

Show your work here:

5. Volume measurement:

a) Measure the volume of the laboratory room in units of ft³. Write your answer on the board in front of the class.

Volume = ________________________________________

b) Find the volume of the laboratory room in units of gallons, and in units of liters.

Volume = ____________________gallons = ________________________liters

c) What is the mass of the air in the laboratory room in units of Kg? (Hint: the density of air is 1.29 grams per liter)

Mass = _________________________________

d) How many air molecules are in the laboratory room?

Number of molecules = _____________________________

e) How many pounds does the air in the room weigh?

Weight of air = _______________________________________

Some Conversion Factors:

Distance to San Francisco = 450 miles

3 feet = 1 yard 1 meter = 3.281 ft 1 mile= 5280 ft

1 ft³ = 28.32 liters 1 gallon = 3.8 liters 1000 grams = 1 Kg

22.4 liters of air at standard temperature and pressure contains 6.02 x 10²³ molecules

a mass of 1 Kg weighs 2.2 pounds on earth