Variables
What is the variable that is left the same throughout the experiment to make a fair test?
control/ constant
Why would you want to do an experiment more than one time?
Qualitative or Quantitative: Measuring your plants with a ruler in centimeters.
Quantitative, centimeters would be numbers
A student is investigating the time it takes for different objects to reach the ground after they are dropped. Each object is dropped from 10 meters high. The constant in this investigation is the
What is the variable that the experimenter changes?
independent
What is an observation?
An observation is where you can clearly see something during an experiment.
Qualitative or Quantitative: An observation made using the five senses.
Qualitative
Freddy tested six different plants to see which would grow the tallest in the plant food he just bought. What is the dependent variable in this experiment?
How tall the plants grow.
What is the variable that is measured?
dependent variable
A scientific procedure that is done in order to make a discovery, test a hypothesis, or demonstrate a known fact is a/an?
Experiment
Qualitative or Quantitative: The student measured that his rocks were 35 grams.
Quanitative
Name three constants from the penny experiment!
Answers will vary
What is the independent variable in the following example: Jessica is testing how different plant foods cause plants to grow taller.
Plant food
When you decide whether or not the data supports the original hypothesis, you are making a ?
Conclusion
Qualitative or Quantitative: The type of observation that collects number data
A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is?
Temperature
Two students studied for different amounts of time, then they took the same test in the same class at the same time. What is ONE of the constants/controls?
The test, the class, the same time they took the test
A hypothesis is always written as an ___, ____ statement.
If, then
Qualitative or Quantitative: How tasty two different types of brownies are.
Qualitative
What is an independent variable?
What is changed on purpose by the experimenter!!!!!