Scientific Method
The first step of the scientific method
observation
The variable that the experimenter is changing
independent variable
All living things are made of
cells
the removal of wastes
excretion
"The liquid smelled foul and was a dark green" is an example of what type of data?
qualitative
A testable explanation for a problem
hypothesis
variables that stay the same in all groups of the experiment
constants
the maintaining of an internal environment despite changes to the external environment
homeostasis
the sum of all the chemical reactions that occur in our boodies
metabolism
made of DNA and codes for proteins that help determine an organism's traits
genes
a planned procedure used to test the hypothesis
experiment
the variable that is measured
dependent variable
The addition of mass (I.e. height, weight.)
growth
taking in O2, using it to release energy from food, and releasing CO2
organisms depend on one another in their environment
interdependence
using and observation and prior knowledge to come to a conclusion
inference
The group that is used for comparison and lacks the independent variable
control group
I pull my hand away after touching a hot surface. This is an example of
a response to stimuli
transport of nutrients, gases, wastes, etc
circulation
"The temperature is cold so I get goosebumps and shiver to naturally warm myself" is an example of what?
homeostasis
List the steps of the scientific method in the correct order (hint: there are 7)
observe, question, research, hypothesis, experiment, conclude/analyze, report
You water three sunflower plants with salt water. Each plant receives a different concentration of salt solution. A fourth plant receives regular water. After a two-week period, the height of the plants is measured. All other environmental conditions were kept the same for all the plants. Identify the independent variable and dependent variable
IV: concentration of salt
DV: height of plant
rank the levels of organization from most simple to most complex
cell, tissue, organ, organ system, organisms
changing substances into different forms (ex. food to energy used in the tissue)
assimilation
"The polar bear has thick white fur that helps it stay warm in cold climates and blend in with the snowy terrain" is an example of what
adaptation