Show:
Scientific Measurements
Scientific Method
Parts of Experiments
Metric Units
Metric Conversions
100
This tool is used to measure the mass of an object.
A triple beam balance.
100
A scientific investigation typically begins with this.
A problem or question.
100
Brittany designs an experiment in which she places one carnation flower into a different colored water. She observes the flowers to see if they will change color to match the water. She places one flower in blue water, one flower in clear water, one flower in orange water, and one flower in green water. What is her control group?
The flower in clear water.
100
The unit abbreviation "dm" stands for...
decimeter
100
1 kL is equal to how many mL?
1,000,000 mL or 1.0 x 10^6 mL
200
Using a graduated cylinder, the volume of an irregularly shaped object can be measured using this method.
The water displacement method.
200
In this step of a scientific investigation, the experimenter looks for patterns or trends in the results of their experiment.
Analyzing data.
200
Thanh wants to know which candle type will burn the fastest. She tests three different types of candles and lights them. She lets the Bath and Body Works candle burn for 20 minutes, the Yankee Candle burns for 40 minutes, and the Colonial Candle burns for 60 minutes. After her experiment, she observes that the Colonial Candle burnt the most wax. What is wrong with Thanh's experiment?
She has two independent variables. She should keep the burn time constant for all three candle types.
200
The unit abbreviation "ms" stands for...
millisecond
200
43 hg is equal to how many kg?
4.3 kg
300
This tool is used to measure the length of an object.
A ruler or meter stick.
300
True or false: Scientific investigations must always proceed in a strict sequence of steps.
False.
300
Hannah designs an experiment in which she tests different sized wheels on her skateboard. She normally uses 52 mm wheels, but wants to see if bigger wheels will increase her speed. She uses the same skateboard and tests 52 mm wheels, 56 mm wheels, and 60 mm wheels. Traveling over the same distance, she finds that her speed is fastest in her normal 52 mm wheels. What is the dependent variable in her experiment?
Her speed on the skateboard
300
The unit abbreviation for kiloliter is...
kL
300
75 m is equal to how many cm?
7,500 cm or 7.5 x 10^3 cm
400
The system of measurements that is used in the international scientific community is called the...
The metric system or International System of Units or SI units.
400
What is the difference between a hypothesis and an inference?
Both are educated guesses or explanations, but a hypothesis is testable in a controlled experiment.
400
The variable in a controlled experiment that the experimenter changes.
What is an independent variable?
400
The unit abbreviation for decagram is...
dag
400
60 das is equal to how many ms?
600,000 ms or 6.0 x 10^5 ms
500
The metric system is based on this number.
10
500
In this step of an experiment, an answer to the original problem is stated, based on the data collected from the experiment.
The conclusion.
500
Factors in controlled experiments that remain the same for all test groups.
Constants.
500
The unit abbreviation "m" by itself stands for...
meter
500
1.2 dm is equal to how many hm?
0.0012 hm or 1.2 x 10^-3 hm