converting measurements
Convert 10.5 milliliters into liters.
0.0105 Liters
How many significant figures in 0.02930
4
what is the first step of scientific inquiry?
Making an observation
is the following data set accurate, precise, both, or neither?
True Value: 32
Experimental values: 12, 15, 10, 13, 15, 9, 10
Precise
5,403 meters
How many significant figures in 2,040
3
what is the last step in scientific inquiry?
Communicate the results
What is a balance used for? (include what base unit it uses)
To measure mass, in grams
Convert 5.40 cm into mm.
54 mm
How many significant figures in 20.039
5
Which step requires you to make a prediction?
Forming a hypothesis
What is the control group, experimental group and independent and dependent variables?
Carlos is developing a new chocolate chip recipe. He wanted to test out the affect the amount of flour has on the baking process. he tests recipes with no flour, a little bit of flour, and a lot of flour. While testing recipes out, he notices that when he adds less and less flour to the cookie dough, the cookies get wider and spread out on the pan.
Control group: no flour recipe
Experimental groups: different amounts of flour
Independent variable: amount of flour in the recipes
Dependent variable: amount the cookie spreads out on the pan
What is 2.54 kilograms in grams?
2,540 grams
How many significant figures in 0.2040
4
What do you do after you analyze your data?
Make a conclusion
What are the dependent and independent variables?
"Tanner collected 20 standard footballs. He fully inflated ten of them to an air pressure of 13 pounds per square inch. He inflated the remaining ten to an air pressure of 10 pounds per square inch. Tanner used a football launcher to launch a ball across a football field. He measured the distance the football traveled and then launched the next ball. Tanner repeated this with all 20 balls"
Independent variable: amount of air in the footballs
dependent variable: how far the football traveled across the field.
What is 4.05 kilometers in decimeters?
40,500 decimeters
How many significant figures in 408,490
5
If your hypothesis is not supported by your results, what should you do next?
What are the three ways in which scientists can reduce bias?
random sampling, blind experiment, and repetition