Sci & Eng Practices
Rewrite this hypothesis in the proper format. "Plants are affected by music."
Multiple answers accepted. Must be testable and include "if, then, because".
A student tests whether fertilizer amount affects plant height. The fertilizer amount is this type of variable.
What is the independent variable?
Name three lab safety rules.
Multiple answers accepted.
Never perform unauthorized experiments
Do not work in the laboratory unless the instructory is present
Ask for assistance
Do not eat or drink
Dress properly
Keep area clean
Wash hands
Dispose of glass/broken materials properly
Never ponit a test tube toward yourself or anyone else
What is the difference between communicable and non-communicable diseases?
BONUS: Identify one example of each
What is communicable diseases are spread by germs/contagious?
What are bacteria and protozoa? (single-celled)
What is fungi? (multi-celled)
Mr. Krabbs has created a sauce that helps relieve constipation. The 50 customers that eat Krabby Patties with his sauce have less constipation than the customers who didn’t.
What is your conclusion?
What is Mr. Krabbs' sauce is effective?
Cassie wants to test if playing more Fortnite improves student grades. What is the dependent variable?
What is student grades?
The cuff of Sam's long-sleeved shirt caught fire. He ran to show his teacher. What lab safety rule did he break?
Multiple answers accepted.
What is running in the lab?
What is not wearing proper clothing?
Malaria is an example of...
What is a communicable disease?
What is revise the hypothesis and/or retest?
To test the effect of caffeine on attention span, Kristina gives 10 teenagers Celsius and 10 teenagers juice. She then tests each student's attention span.
What type of variable is juice?
What is a controlled variable?
Cindy broke a test tube. Where should she dispose of the glass?
What is the broken glass disposal?
NOT the trash can!!!!
What are the four ways that diseases are spread?
What are...
person to person, person to food, food to person, animal to person
Name one of the 8 science and engineering practices.
Multiple answers accepted.
What is...
Asking questions and defining problems
Developing and using models
Planning and carrying out investigations
Analyzing and interpreting data
Using mathematical thinking
Constructing explanations and designing solutions
Making an evidence-based argument
Obtaining, evaluating, and communicating information.
A scientist wants to know if screen time affects sleep duration in teenagers. Identify three variables that should be controlled.
Multiple answers accepted.
Bedtime, caffeine intake, age of participants, type of bed, presence/absence of sleep disorders
BONUS: Explain what it is.
What is osmosis?
What is water flows from area of high concentration to area of low concentration?
What are three factors that contribute to non-communicable diseases?
What are genetic, lifestyle, and environmental factors?
A researcher finds that towns with more ice cream shops also have higher rates of drowning. A local news headline claims "Ice Cream Sales Cause Drownings." Why is this conclusion flawed? What is the actual variable that likely explains both trends?
Two variables can be related without one causing the other!
Variable: What is "hot weather/summer"?
A student tests a new plant food by giving it to 20 plants in a sunny window, while 20 plants with no plant food are left in a shady corner. The plant-food group grows taller. Explain why this experiment's conclusion is flawed, and identify the confounding (uncontrolled) variable.
What is sunlight amount differs between groups?
We can't tell if plant food or sunlight caused the growth! Sunlight is the confounding (uncontrolled) variable.
Name two control variables we used in the gummy bear lab.
What is time soaked in the liquid?
What is amount of liquid?
What is type of gummy bear?
A certain amount of people in a community are vaccinated against a disease. This makes it so that even those who are not vaccinated are safe. What is the term for this?
What is herd immunity?