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Better Lab Safety, than Lab Sorry!
Give me an I-V, D-V, C-V!
Don't Let Scenarios, Scare-u-o!
See you Liter Aligator
Jump, Jump, Jump Around!
100
What happens FIRST if your lab partner's trench coat catches fire?
Alert the teacher... then grab the fire blanket!
100
This variable is only changed by the scientist. "I control"
Independent Variable
100
If you increase the amount of milk you drink, then you will increase the strength of your bones. What is the independent and dependent variables?
IV: Amount of Milk DV: Strength of Bones
100
State the correct order of the metric units from greatest to least.
Kilo Hecto Deka (base: meter, liter, gram) deci centi milli
100
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!
200
What should the ladies do about their long, Rapunzel-like hair during a lan experiment?
Tie back or wear a headband.
200
A variable that is not changed, allowing for fair test/comparison.
Controlled Variable
200
Define DEPENDENT VARIABLE
DV is what the scientist measures as the result or response of the experiment.
200
Convert 2.3 Kg = ____________ g
2300 grams
200
The Metric System of Measurement is important to use in science. Why to 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.
300
What should you do every time you the science lab?
Clean your work area and equipment, return all equipment and wash your hands with soap and water.
300
The temperature of water was measure at different depths of a pond. Identify IV and DV
IV: Depth of the water DV: Temperature
300
What is a CONSTANT variable?
A constant variable is something that stays the same in an experiment.
300
Convert 11 mL = ___________ L
0.011 L
300
How do you know that a kilometer is larger than a meter? Explain why.
Answers vary: K is before base (meters) on the scale. A kilometer is approx. a mile, a meter is approx. a yard. Kilometers are units used in farther distance travel on roads, maps, etc.
400
What does DTUI mean?
Don't Touch Until Instructed!!!!!!!!!!!!!
400
A student wants to test how the concentration of phosphorus in a fertilizer affects each plant's growth. In designing this experiment the independent variable would MOST LIKELY be the.....
Independent Variable is the amount of phosphorus used per plant.
400
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
400
Convert 64 dg = ___________ g
answer: 6.4 g
400
The prefix deci-/deka- represents the tenths place value? Choose one.
Deci represents the tenths place value.
500
What type of clothing is not the best idea to wear during lab?
Loose clothing, dangling jewelry, and open-toed sandals.
500
An investigation was done with an electromagnetic system made from a battery and wire wrapped around a nail. Different sizes of nails were used. The number of paper clips the electromagnet could pick up was measured. What are the controlled variable(s)? and WHY!?
Controlled variables include battery, wire, type of nail. None of these variables were changed.
500
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
500
Convert 5.7 Hm to ___________ cm
answer: 57,000 cm
500
***ALL GROUPS*** Write a conclusion for the following experiment. Mike predicted that giving children candy would make then do more jumping jacks. He gave 50 kids candy and 50 kids no candy. He counted how many jumping jacks the kids could do in 1 minute. The group with candy did 225 jumping jacks in total, and the group with no candy did 303 jumping jacks in total.
Answers will vary. In conclusion, the group with no candy did more jumping jacks. That group did 303 jumping jacks. The group with candy did 225 jumping jacks. The result did not agree with Mike's hypothesis. Next time, Mike could test more students, change the candy to see a different result, time it for longer, change the exercise, etc.