If you need to observe how a chemical smells, what should you do?
What is use the wafting technique
100
Make a quantitative observation about the classroom.
Sample answer: There are six lab stations in the classroom.
200
What is the name of the genetic material that organisms pass to their offspring when they reproduce?
What is DNA
200
Which type of feedback accelerates/speeds up a change?
What is positive feedback
200
This type of observation/data deals with descriptions, and cannot be measured with numbers.
What is qualitative
200
If you are unsure of the directions, what should you do?
What is ask the teacher. You should also make sure you have read over the directions.
200
Make a qualitative observation about the classroom.
Sample answer: the lab benches are black
300
What is the basic unit of structure and function of living things?
What is the cell.
300
When you cut yourself, platelets stick to your wound and signal other platelets to speed up clotting. Is this positive or negative feedback?
What is positive feedback
300
This is a proposed answer to a scientific question. It must be testable and should be written in "if-then" format.
What is hypothesis
300
What kind of shoes must be worn in the lab?
What is closed-toe shoes.
300
What is the difference between an observation and an inference?
An observation uses your senses to gather information, while an inference is a conclusion based on your observations.
400
Give an example of an organism responding to its environment.
Sample answers: a person sweating in a hot room; a plant growing toward the light.
400
When your blood sugar levels are too high, your pancreas produces insulin to signal cells to absorb sugar, therefore lowering blood sugar. Is this positive or negative feedback?
What is negative feedback
400
This type of variable is what the scientist purposely changes.
What is the independent variable
400
Bob needs to heat his liquid, so he puts a cork in his Erlenmeyer flask and puts it over the bunsen burner. What is wrong with the picture?
You shouldn't heat closed containers.
400
__________________ help(s) a scientist display and organize their data so they can observe trends.
What is graphs and tables
500
List at least 4 of the 8 characteristics of living things (the more the better!).
What are: DNA, Develop, Respond, Cells, Homeostasis, Energy, Evolve, Reproduce
500
Name the four parts of a feedback loop.
What is Environment/Stimulus, Receptor, Control Center, and Effector.
500
You want to see if studying with flashcards helps improve student test scores, so you give half the students flashcards and tell the other half to study without them. Which group is the experimental group?
What is the group using the flashcards; they are receiving the independent variable.
500
When diluting an acid, should you add the acid to the water or the water to the acid?
Acid to the water
500
What are sources of error?
Factors that may have affected the results without the scientist's knowing.