Measurement
What are the basic metric units for temperature?
Celsius
What is an observation?
An observation is defined as using one or more of the five senses to gather information
What ALWAYS goes at the top of your graph?
(2 things)
Title AND name
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.
What is the independent variable?
The growth hormone
What is step one of the scientific method?
The purpose or problem
What tool AND unit do we use to find length?
Ruler and CM (or mm)
What is an inference?
An inference is defined as the development of ideas based on observations
What variable goes on the X-axis?
independent variable
A stapler is used to staple 100 papers, it jams 5 times during the trial. A different brand of stapler performs the same test; it jams 22 times.
What is the dependent variable?
How many times to stapler jams
What is step 2 of the scientific method?
Conduct Research
How do you find the volume of water?
Use a graduated cylinder and measure the bottom of the meniscus
There is a zebra in the picture
observation or inference?
observation
What variable goes on the Y-axis?
Dependent Variable
An apple is cut into slices. Half of the slices are sprayed with lemon juice. All slices are stored in a sealed plastic bag. After 4 days, they are observed to see how brown they turned.
What is the dependent variable?
How brown the apples turn
What is step 4 of the scientific method?
conduct an experiment
How would you use water displacement to find the volume of a rock?
2. Drop the rock in
3. Measure the ending volume
4. Subtract the starting from the ending to get the volume of the rock
Through the window, it seems like it might be cold outside today
observation or inference?
inference
When should you use a line graph instead of a bar graph?
When you are measuring time
Two plants are grown using the same light and pots. One plant is given water that has been microwaved and the other plant is given regular tap water. Their height is measured after 2 weeks.
What are 2 constants?
same light and same pots
What is the last step of the scientific method?
Your conclusion, share your results!
What is the difference between weight and mass?
With weight you factor in gravity, while mass is the same anywhere you are.
Kelly and Jenny are friends because they sat by each other today
What is the observation?
What is the inference?
observation: They sat by each other
Inference: They are friends
What does
S
T
U
P
Y
X
stand for?
Scale
Title
Units
Plot
Y-axis
X-axis
Cockroaches are exposed to a pesticide. After 3 hours, 95% of the insects are dead.
What is the control?
A group of cockroaches not exposed to pesticide.
What is the format for writing a good hypothesis?
If the independent variable increases/decreases
then the dependent variable will increase/decrease because...