Human Error
Experimental Error
Name that Error
Avoiding Error
Variable Review
100
Name two types of human error
What is bias, not following procedure, making an error in measurement or calculation, not having a controlled experiment
100
What is the difference between experimental error and human error?
What is human error is made by the scientist. Experimental error is not
100
Dynecia wants to measure the temperature of a chemical reaction. When using her thermometer, she gets a reading of 94.5C. Briana measures the same chemical reaction. When using a different thermometer, she gets a reading of 95.1C. What type of error is this? WHY???
What is experimental. The girls didn't make a mistake. They saw different temperatures because different thermometers were used.
100
Ms. Wolfe wants to create an experiment to see how much her scholars grew on the TCAP writing prompt. She looks at their TCAP scores in February. She concludes which scholars grew the most in their writing skills by seeing which scholars scored the highest on the February TCAP. What can Ms. Wolfe do to avoid error in her experiment?
What is take more measurements
100
What is the independent variable?
What is what the scientist changes
200
What must you do if you make an error in an experiment?
What is start over or redo the experiment
200
To limit experimental error you must have several ______________ in your experiment
What is trials or measurements
200
The experiment asks Mr. Warren to add 3grams of salt and 5mL of water to the beaker. Mr. Warren pours 15mL of water, then adds 3grams of salt to the beaker. What type of error was this?
What is human error
200
Two birds are fed different types of bird seed to determine which type causes the bird to gain more weight. Which of the following would be an error in the experiment? A. The birds are different species. B. The birds are allowed to eat all the seed they wanted. C. The birds are exposed to different amounts of light and heat. D. All of the above.
What is D
300
Name one source of bias.
What is trying to persuade someone else, relying on incomplete information, past experiences influencing you
300
You may have a valid conclusion if you have _____ independent variable and _____ dependent variable.
What is one and one
300
The experiment asks Mr. Warren to add 3grams of salt and 5mL of water to the beaker. Mr. Warren pours 15mL of water, then adds 3grams of salt to the beaker. What was the error in the experiment? BE SPECIFIC
What is he did not follow procedure and put an incorrect amount of water. He was supposed to use 5mL but used 15mL.
300
A student rolled a toy car down a ramp and timed how long it took to reach the bottom. After one trial, the student doubled the height of the ramp and added sandpaper to its surface. The student conducted three more trials. After reviewing the data, the student concluded the height of the ramp had no effect on the speed that the car traveled. What is the most likely source of error in this experiment?
What is too many independent variables
300
What is another name for control variable?
What is constant
400
What is the equation to calculate volume or change?
What is change= final - initial
400
Control groups are used for ____________________
What is comparison
400
Ms. Fox wants to measure the progress that Desmond has in science class from his first science quiz. Ms. Fox is so proud of Desmond for making a 98 on his second science assessment! She concludes that Desmond grew tremendously. What is the source of error in her conclusion?
What is no cause and effect, not enough measurements.
400
A student rolled a toy car down a ramp and timed how long it took to reach the bottom. After one trial, the student doubled the height of the ramp and added sandpaper to its surface. The student conducted three more trials. After reviewing the data, the student concluded the height of the ramp had no effect on the speed that the car traveled. How could the student fix the experiment in order to avoid error?
What is change the sandpaper and keep the height the same, or change the height and do not use sandpaper
400
What is the difference between experimental group and control group?
What is experimental group receives treatment, control group does not
500
Calculate the volume of the rock using the information given below. The graduated cylinder contained 20mL of water before adding the rock. After adding the rock, the graduated cylinder then read 60mL. What is the volume of the rock?
What is 40mL.
500
To have a valid conclusion there must be proof of what type of relationship?
What is cause and effect
500
Ms. Monson wants to see if her muffins are the best muffins in the school. She asks all the teacher to make muffins. She gets the scholars to choose their favorite muffins. As she is asking each, she tells them that her muffins are delicious. What is the source of error in this experiment?
What is bias-human error
500
A student created an experiment to see how behavior affected a scholars’ academic performance. The student observed five different scholars’ behavior and recorded their test performance. The student noticed that the scholars that were taller were scoring better on their test. The student concluded that tall people are smarter. What is wrong with the student’s conclusion?
What is no proof; the experiment had nothing to do with height
500
What is the difference between control variable and control group?
What is control group- group used for comparison, does not receive treatment. Control variable- variables kept the same so that you know the independent variable is what gave you results
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