Bell ringer What is your study plan for midterms on Monday and Tuesday?

Any work you owe --turn in what you have for partial credit --send it to me through by Saturday: Don’t forget:

Midterm Review

1. Graphing Reading graphs --correctly read a specific value --compare two different values within the same graph

Identify trends

Find areas of increase and decrease --sharp or gradual increase and decrease

Read values from a scatter plot

Match table to graph Which graph matches this table of data? Food itemsFat (in grams) Raw clams2 Fish sticks10 Canned tuna6 Lean ground beef8 Lamb chop4 Canned Ham2

Select one or more points from a table

Make a graph Multiple bar graph Multiple line graph Scatter plot For all three: --Informative title --Labeled axes --evenly spaced --Graph uses as close to full space as possible --Includes key if necessary --points correctly plotted --correctly drawn best fit line if applicable

2. What is and is not science Science is the search for answers about the natural world and how it works. It is not “the truth”—science is always changing based on new information. So we don’t say we have proved a hypothesis: our hypothesis is supported. It is not simply experimentation. It cannot answer every question.

3. Observation and Inference Observations: what you perceive with your senses Inferences: conclusions drawn from observation and background knowledge

4. Variables: Independent, dependent, controlled Identify independent and dependent variables: --by definition --in a table --in a graph --in a purpose question --in a description of an experiment

Controlled variables Definition Identify in an experiment List controls based on understanding what would make a comparison “fair” Identify control group vs. experimental group Identify what’s wrong with an experiment

5. Scientific Inquiry Know steps of Scientific Method Know that the steps don’t have to be in a certain order: there is no fixed Scientific Method Know definition of hypothesis: -- A tentative explanation for an observation, phenomenon, or scientific problem that can be tested --Must be falsifiable (can be proven false if it is false)

6. Cells Properties of living things Cell Theory Prokaryotic cells—types, role in Earth history and present Prokaryotic vs. eukaryotic cells