Measurement Tools
Units of Measurement
Measure Me
Variables
Variables Part 2
Miscellaneous
100
What tool would one use to measure length?
ruler (metric ruler)
100
What is the BASE UNIT for length?
meter (m)
100
24 ml
100
What is the ONE variable that is changed by the researcher conducting an experiment?
Independent variable
100
In the following experiment, what is the independent variable?
Salt
100
The book is 235 pages long.
Is this observation qualitative or quantitative?
quantitative
200
What is a tool one would use to measure liquid volume?
graduated cylinder
200
What is the BASE UNIT for measuring mass?
grams (g)
200
521.2 g
200
What is the variable that the scientist is measuring (seeing how it changes)?
Dependent variable
200
Ms. Fegeas set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the dependent variable.
The distance the ball rolls off a ramp
200
The book is red and has a picture of a dog on its cover.
Are these observations qualitative or quantitative?
Qualitative
300
What did we use in class to measure mass?
Triple-beam balance
300
In the metric system, what is the basic unit for measuring liquid volume?
(Hint, do not use any prefixes.)
Liter (L)
300
What is the volume of the key?
10 cm3
(Fun fact! 1 liquid mL is equal to 1 solid cm3! Metric is very cool that way. :) )
300
What is the name for a variable that is kept the same in an experiment to keep the data valid?
Constant
300
I want to conduct an experiment to see if the amount of light in the room affects how far I can see an object. What is the independent variable in this experiment?
Amount of light
300
What is the measure of the amount of matter in an object?
Mass
400
What 2 things can be used to measure temperature?
Thermometer and temperature probe
400
What unit of measurement would I use to measure the mass of a cat?
a) grams
b) kilograms
c) meters
d) kilometers
kilograms
400
What unit of measurement would I use to measure the length of a pencil?
a) meters
b) kilometers
c) milliliters
d) centimeters
centimeters
400
To test the following hypothesis, what would the dependent variable be?
The farther a ball drops, the higher it will bounce.
Height of the bounce
400
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. What are TWO variables that must remain constant (the same)?
Amount of soil
Amount of sunlight
Amount of liquid
Temperature
400
In the scientific method, what do you do before making a hypothesis (before doing any research as well)?
Ask a question
500
What tools would you use to measure the density of a pebble?
Triple-beam balance (or electronic balance) and a graduated cylinder
500
Why do scientists use the metric system?
Nearly all other countries use the metric system and scientists collaborate globally.
500
What unit of measurement would I use to measure the distance between Madison and Charlottesville?
a) meters
b) kilometers
c) milliliters
d) centimeters
kilometers
500
A student conducts an experiment to see which type of toy car goes the fastest. What is the independent variable?
type of toy car
500
A student thinks that if he increases the amount of time he exercises, he can decrease the amount of time is takes to run a mile.
What would be the independent variable (IV) and dependent variable (DV) if the student was to test this hypothesis?
IV: Amount of time he exercises
DV: Amount of time he takes to run a mile
500
In and if/then hypothesis, the IF part decribes the cause and the THEN part describes the effect. This helps in defining variables.
What type of variable would be the cause? What type of variable is the effect?
Cause = independent variable
Effect = dependent variable