Hypothesis
What is formulating a hypothesis?
What type of graph shows change over time?
What is a line graph
What variables need to be included in your hypothesis?
What are the independent and dependent variables?
Name one lab safety rule.
(Answers will vary)
What are the two types of observations?
What are qualitative and quantitative.
What is the definition of a hypothesis?
What is an educated guess to an expected outcome of an experiment?
What variable is on the X axis?
What is independent?
What is the responding variable or factor that may or may not change due to manipulation?
What is the dependent variable?
Why do you waft not whiff?
If you whiff a substance, you can potentially burn your nose or smell something that is toxic.
Construct your own hypothesis for the following problem:
Problem: Does studying longer increase test scores?
(Answers will vary)
You survey your class to find out their favorite hot dog topping. 18 students like mustard, 3 students like ketchup, and 4 students like cheese. What type of graph would you use for this data?
What is a pie graph?
In an experiment what are the variables that are not being studied that stay the same so that they do not influence the experimental outcome called?
What are constants?
During my whoosh bottle demonstration, name 3 lab safety rules I need to follow to ensure I do not catch on fire.
What are...Answers will vary
If soil temperatures rise, then plant growth will increase. What is the dependent variable?
What is plant growth?
If you drink more milk will you get good bones? What is wrong with this hypothesis?
What is... 1. No then statement, no second indicator word 3. Does not tell you what you are measuring (dependent variable)
What does DRY MIX stand for?
What is... Dependent, Responding, Y-axis, Manipulated, Independent, X-axis
What is the term we use to describe the manipulated variable or factor that the experimenter intentionally changes?
What is the independent variable?
Why do you never pour acid into water?
Because the water pushes out the acid fumes, causing a dangerous situation. Acid can have a violent reaction and go everywhere.
The ___________ involves a series of steps that are used to investigate a natural occurrence.
What is the scientific method.
Read the following experiment and state a good hypothesis. I am doing a test to see if there is a connection between how long you run and how fast your heart beats. I will be performing an experiment where a person will run for a 1 minute and I will check their heartbeat. Then they will run for 2 minutes and I will check their heart rate. I will do this up to 6 minutes and see if there is a connection. What do you think my hypothesis should be?
What is... If I increase the amount of time I run, then my heartbeat will increase.
For our whoosh bottle experiment, we are measuring 2 different concentrations of alcohol and water. What type of graph will you use to display the whoosh sound in decibels?
What is a bar graph?
Find the independent and dependent variables in the following experiment: If you increase the number of times you practice shooting free-throws, then you will increase your chances of making a basket every time.
Independent: practice shooting free throws
Dependent: making baskets
Why is it important to wear closed toed shoes to lab?
What is...Because chemicals or objects can be crushed, causing burns, reactions, or crushing.
I wonder if smoking and lung cancer are related. What is the independent variable in the experiment you will run?
What is smoking?