Scientific Method
What is the 1st step of the Scientific Method?
Ask a QUESTION (or state a problem)
What is a graduated cylinder? More specifically, what does it measure?
A tall, usually skinny cylinder, that is used to measure volume
How many Independent Variables can there be in one experiment? Explain why!
There can only be 1 Independent Variable in each experiment. This is done to test for which change is causing the result!
What is the 2nd step of the Scientific Method?
What are two different tools we use to measure mass?
A balance beam and a scale
The Metric System of Measurement is important to use in science. Why do scientists choose to use this system?
Answers Vary: This is the system used in most of the world. It makes it easier to compare and communicate data.
A Hypothesis should be written in the format of ?
"If this_______ then this_____."
How do I measure the length of this classroom if I only use a meter stick? (Hint: think back to catapult lab)
You place the meter stick on the wall, then mark off how far the meter stick reaches out. Pick up the meter stick and place it down where you marked it. Continue this pattern until you reach the other wall. Count how many meter sticks it took to reach the end.
What does CER stand for?
Claim, Evidence, Reasoning
Why is it important to record and collect data?
So we can see if our hypothesis was correct or not
How do we read and use a triple beam balance?
Make sure it's balanced out first. Then, when you add the object to the scale, start with hundreds weight, then move onto ten's and one's. You know the mass when the white lines match up with each other. Add up the weights and that is your total mass of the object
Identify the Independent Variable in this example: Jess thinks that shampoo makes bigger bubbles than dish soap. She makes bubbles with 3 different solutions, plain water, shampoo and dish soap. She measures the size of the bubbles in centimeters.
IV = the 3 different solutions or the type of soap used
Convert 64 dg = ___________ g
answer: 6.4 g
In what month does Day-light savings time start?
March (Spring ahead!)
What is the last step of the Scientific Method, and explain why this step is so important in science.
Communicate results and retest. We share data to help understand why things happen. Repeating trials is necessary to eliminate mistakes and make sure data makes sense (multiple trials)
What's the difference between a flask and a beaker, and how do we measure the liquid inside?
Beakers have straight sides, rather than slanted sides like a flask. Beakers have a wider opening, flasks have a smaller opening. To measure: place beaker on flat surface, view the height of the liquid at eye level, read volume at bottom of meniscus
Identify the Dependent Variable in this example: Jess thinks that shampoo makes bigger bubbles than dish soap. She makes bubbles with 3 different solutions, plain water, shampoo and dish soap. She measures the size of the bubbles in centimeters.
DV = size of bubbles in centimeters
What is the term in science for studying the sun, moon, stars, planets, comets, etc.?
Astronomy