Metric System
What is the metric system?
The metric system is a measurement system based on increments of ten.
What is a control group?
A control group is not changed during an experiment and does not receive the independent variable. It is used to compare results.
480 hm = _____ m
48,000 m
What is the abbreviation for kiloliters?
kL
What is a hypothesis/initial claim?
An educated guess at the answer to the question being tested.
What is volume?
The amount of space a 3-dimensional object occupies or takes up.
What is the dependent variable in an experiment?
The dependent variable changes during an experiment because of the independent variable
2500 m = _______ Km
2.5 Km
What is the abbreviation for dekagrams?
dag
What laboratory tool would you use to measure the mass of pencil?
Triple Beam Balance
What is the difference between weight and mass?
Weight is the measurement of the force of gravity on matter and is measured in Newtons.
Mass is the measurement of how much matter is in an object and is measured in grams.
What is the independent variable in an experiment?
The independent variable is the variable that is purposefully changed in an experiment.
75 mL = _____ L
.075 L
What is the abbreviation for kilometers?
km
What would be the purpose of an experiment with the dependent variable of plant height and the independent variable of plant food?
The purpose of the experiment would be to find the effect of plant food on plant height.
What unit would you use to measure how far a mouse might run in 30 seconds?
Meter (m) or dekameters (dm)
What is the purpose of CER?
CER provides a method for writing scientific explanations.
65 dg = _____ mg
6500 mg
What is the abbreviation for centiliters?
cL
There are six things scientists measure. Name three of them.
Volume, Mass, Distance, Weight, Time, Temperature
What unit would you use to measure the mass of an adult?
Kilograms (Kg)
What are at least two variables that need to be controlled when testing the effects of the brand of microwave popcorn bag and the number of kernels popped?
Controlled variables could include: size of popcorn bag, starting amount of kernels, same microwave, same cook time, etc.
5.6 kg = _____ g
5600 g
What are the three base units and the abbreviations of the metric system?
Volume- Liters (L)
Distance- Meters (m)
Mass- Grams (g)
One gram is how many hectograms?
1 g = .01 hg