Vocabulary
The factor that the scientist manipulates/changes in an experiment
Independent variable
Judgement based on the results of an experiment
Conclusion
Problem
step 1
number of independent variables in a good science experiment
One
Your height, your shoe size, and the length of your fingernails are examples of _?_ observations.
quantitative
Factor that responds to manipulated variable or what is being measured.
Dependent variable
Factor(s) held constant in an experiment
Controlled variables
test the hypothesis
step 3
variable that is recorded as data
dependent variable
If I use oak in my wood-stove, then it will burn longer then other woods like ash or spruce. What is the dependent variable?
the time the wood burns.
A series of steps followed to solve problems
The scientific method
observations and measurements recorded during an experiment
data
Draw Conclusion
step 5
An investigation was done to see if keeping the lights on for different amounts of time each day affected the number of eggs chickens laid. What is the independent variable?
keeping the lights on for different amounts of time each day
The amount of algae growth in lakes seems to be directly related to the number of bags of phosphate fertilizer sold by the local merchants. What is the dependent variable?
amount of algae growth in lakes
using one or more of your senses to gather information directly or indirectly through the use of technology or instruments
Observation
Making a forecast of what will happen in the future based on past experience or evidence
Prediction
Another word for question
step 1
If I use oak in my wood-stove, then it will burn longer then other woods like ash or spruce. What is a controlled variable about the different types of wood you are burning? (Other factors you need to keep constant)
size of the logs and the mass of the logs
What two words should be in any good hypothesis?
the words if and the then
Using new information that you observe and what you already know to explain what is happening
Inference
An explanation or answer to a question that can be tested
Hypothesis
Experiment
step 4
The amount of pollution produced by cars was measured for cars using gasoline containing different amounts of lead. What is the independent variable?
gasoline containing different amounts of lead
I think basketballs inflated with more air bounce higher. Rewrite this statement as a testable hypothesis.
If inflated with more air, then a basketball will bounce higher.
Type of observations that are made with instruments such as rulers, balances, graduated cylinders, beakers, and thermometers. These results are measurable.
Quantitative Observations
Type of observations that deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. They do not involve measurements or numbers.
Qualitative observation
form a hypothesis?
What is step 3
A scientist who wants to study the affects of fertilizer on plants sets up an experiment. Plant A gets no fertilizer, plant B gets 5 mg of fertilizer each day, and plant C gets 10 mg of fertilizer each day. Which plant is the control group.
plant A
Colors, shapes, and textures of objects are examples of _?_ observations.
(Qualitative or Quantitative)
qualitative