Lab Safety
True or False: Contacts are a good alternative to safety goggles
False
What (2) tools were used to measure volume
Graduated cylinder & graduated pipette
What were possible IV of this experiment?
List (3) things that science is
A process, a list of changing facts and beliefs, an ever-growing body of knowledge
A cow is given a growth hormone and then compared to another cow that was not given a growth hormone. Both cows were weighed at 2 years. The IV is...
growth hormone
List (3) lab safety equipment items
Lab coat, goggles, gloves, tie back hair, fire blanket, fire extinguisher, etc.
After completing the lab the volumes of each test tube should be...
Equal in value
What was the DV?
The consistency of the slime
If both variables increase together this is a type of...
direct correlation
A cow is given a growth hormone and then compared to another cow that was not given a growth hormone. Both cows were weighed at 2 years. The DV is...
Weight of cow
If a spill or fire occurs you should first...
Notify your teacher
What was the quantitative observation?
The final observed volume
What objective lens do you start with on a microscope?
4x
Precision is...
how close measurements are to each other
A cow is given a growth hormone and then compared to another cow that was not given a growth hormone. Both cows were weighed at 2 years. The CV is
two years
SDS sheet stands for...
Safety Data Sheets
What is the qualitative observation?
The color in each test tube
How do you properly hold a microscope?
With two hand on the base
Accuracy is...
how close a measurement is to the true value
A cow is given a growth hormone and then compared to another cow that was not given a growth hormone. Both cows were weighed at 2 years. The CG is...
Cow without growth hormone
How do you dilute an acid properly
Always pour the acid into the water
What is the purpose of the lab?
Develop skill in precisely measuring volume
On a wet mount slide can we observe organisms moving?
Yes
List the components of Scientific Methodology
observations, questions, inference, hypothesis, controlled experiments, data/evidence, conclusions, publications, replication
Mosquito repellent is sprayed on one arm and the other arm is not sprayed. The number of mosquito bites is counted after 2 hours. The IV, DV, CV, CG are
IV is mosquito repellent. DV is number of mosquito bites, CV is two hours of time, CG is arm without spray