Science and Engineering Practices
What is the "first step" in science?
To ask a question you want to answer / define a problem you want to solve
What do we call the variable that changes as a result of an experiment (what the scientist measures)?
The Responding Variable
The amount of matter in an object is known as...
Mass
Look at the graph: How much Carbon was emitted from fossil fuels in 1970
4000 (million metric tons)
What do we call the variable that a scientist directly changes in an experiment?
The Manipulated Variable
If a scientist does not answer their question on the first try, what should they do?
Design a new experiment to try to answer the question
When graphing the results of an experiment, which variable goes on the x-axis? Which variable goes on the y-axis?
Manipulated goes on x, Responding goes on y
What is the definition of Volume?
The amount of space and object takes up.
Look at the graph: What is the responding (dependent) variable on this graph?
Amount of Carbon emitted (million metric tons)
Make two scientific observations about the material that Mr. Morn shows you.
(Varies by substance)
Make two scientific observations about the material that Mr. Morn shows you.
(Varies by substance)
Hawkeye wanted to see how far an arrow would fly when he used different bows. What is the responding variable in this experiment?
How far the arrow flies.
The metric system of measurement is easy to use because it is based off the number...
10
Look at the graph: What is the graph missing?
A Label on the x-axis (decade)
You do an experiment to see whether a boat will float or sink in water. Which of the following is an example of EVIDENCE to answer the question?
a) Anything that is more dense than water (1 g/mL) will sink when placed in water, anything that is less dense than water (1 g/mL) will float.
b) The boat will float in water
c) We calculated the density of the boat to be 0.98 g/mL
c) We calculated the density of the boat to be 0.98 g/mL
Why are models useful in science?
They help scientists explore and imagine concepts that are difficult to see
Hawkeye wanted to see how far an arrow would fly when he used different bows. What is the manipulated variable in this experiment?
Different Bows
What are the correct metric units for:
a) Mass
b) Volume
c) Length
d) Weight
a) Grams
b) Cubic meters or Liters
c) Meters
d) Newtons
Look at the graph: How much carbon would you expect humans to have emitted from fossil fuels in 2010?
About 8500 Million Metric Tons
A wooden cube has side lengths of 2cm. What is the volume of the cube?
8 cm3
Identify each of the following as a claim, evidence, or reasoning statement:
a) The chemical reaction would not happen as we had it written.
b) The law of conservation of matter states that no matter is ever created or destroyed, so we have to start and end with the same amount of stuff. Since we did not start with enough red pieces (oxygen) to build the products, then the reaction cannot happen.
c) We had enough legos to build the starting chemicals. We did not have enough legos to build the ending chemicals. We needed more oxygen (red legos).
a) Claim
b) Reasoning
c) Evidence
Hawkeye wanted to see how far an arrow would fly when he used different bows. What are 3 constants in this experiment?
The type of arrow, the launch angle, the person firing the bow (Hawkeye), the height Hawkeye is standing, the wind direction, how far he pulls back the bowstring, etc.
Literally everything else :)
A pencil box has a length of 25cm, a width of 10cm, and a height of 5cm. What is the box's volume?
1250 cm3
Look at the graph: What information does this graph tell us? (What is the relationship between the variables)
(after 1950) humans produce more and more carbon from fossil fuels every decade.
Mr. Morn wanted to see the height that a ping-pong ball would float in different amounts of water. What would be the manipulated variable, responding variable, and one constant in an experiment to test this?
Manipulated: Amount of Water
Responding: Height the ping-pong ball floats
Constant: Various answers