what is science?. sciencescience is… process of thinking, observing, & studying our world by...
Post on 05-Jan-2016
214 Views
Preview:
TRANSCRIPT
What is science?
Science is…
•process of thinking, observing, & studying
our world by using the scientific method
to gain knowledge, answer questions, &
solve problems!
•Experiments = Evidence!
Questions to Consider!
Will science provide answers to all our
questions? Why?
What is science limited by?
Question Activity
One question that can be answered by biology/science?
& One question that can not be answers by
biology/science?
Steps of the Scientific Method
1. Identify a Problem
2. Gathering Information
3. Make a Hypothesis
4. Perform an Experiment
5. Analyze results
6. Draw Conclusions
7. Repeat & Communicate
Scientific Method Step 1
Identify a problemExample: My car will not start.
Step 2Gather informationExample: lights will not turn on, key turns but
engine makes a funny noise○ Observation vs. Inference
Lesson Closure – Exit TicketToday’s objective was to start to identify & discuss the important parts & purpose of the scientific method.
What are some important parts of the scientific method?
Why are observations important in science?
Steps of the Scientific Method
1. Identify a Problem
2. Gathering Information
3. Make a Hypothesis
4. Perform an Experiment
5. Analyze results
6. Draw Conclusions
7. Repeat & Communicate
Scientific Method
Step 3: Make a hypothesis
○ prediction about what you think is going to happen in an
experiment
Specific to an experiment
Testable
If, then format
Example: Fish are dying in a pond. (problem). We investigate the pond & find it is near a housing development, highway, and a farm. (info) We predict that fertilizer from the lawns of the houses & the farm is washing into the pond and killing the fish.
How could we test these questions?
Does cigarette smoking increases the risk of lung cancer?
Can eating breakfast increases performance in school?
How could we raise school spirit?
What would your hypothesis be?
Scientific Method
Step 4: Perform an experiment
Test the hypothesis!
Planned out Procedure
Collect Data (observations)
Procedure Activity 2 Notes Cards
Draw a simple picture on one note card.On the other card, write a procedure to
explain to someone else how to draw the same exact picture.
Pair UpUsing the procedure only, see if your partner
can draw your picture.Hint: don’t tell them what it is!
Scientific Method
Step 5 Analyze the DataWhat does the data mean?Identify relationships
Analyze
• Q: What does this data say?
• A: As temperature increases, dissolved oxygen decreases
Temperature(0C)
Dissolved Oxygen (ppm)
20 45
30 33
40 29
50 15
60 10
Steps of the Scientific Method
1. Identify a Problem
2. Gathering Information
3. Make a Hypothesis
4. Perform an Experiment
5. Analyze results
6. Draw Conclusions
7. Repeat & Communicate
Scientific Method
Step 6: Draw conclusionsMy data did support my hypothesis that…
Or…My data did not support my hypothesis
that…
What would your conclusion be?
• Hypothesis If maintenance increases the number of recycling cans in the lunch room, then the amount of trash will decrease.
• Data:
# of recycling cans Amount of trash (tons)
2 250
3 200
4 150
5 150
6 149
Repeat◦ Why would this be important?
Last is to…
Controlled Experiment! Variables
Only want to change one factor at a time! Why?Constants: variables you keep the sameIndependent vs. Dependent variablesControl Group
Collect DataQualitative vs. Quantitative
You want to know what color flowers butterflies like best. You choose an area you know is naturally inhabited by butterflies. You plant 6
rows of flowers, each row a different color of the same type of flower. Twice a day, each day (morning & evening) you add up the
number of butterflies found on each different color of flowers.
What is your independent variable?
What is your dependent variable?
What are your constants?
Results of Science Scientific Theory
explanation that has been supported by many experiments○ Makes Predictions○ Has lots of evidence to support
those predictions○ Is constantly being tested!
top related