Lab Safety
Vocabulary
EOG Questions
EOG Questions
Vocabulary
100
Which of the following should not be worn during a lab? a-loose clothing, b-dangling jewlery, c- sandals, d- all of the above
d- all of the above
100
a decision or claim based on investigation and evidence, can become a new hypotheses to be tested
conclusion
100
A student wanted to know whether a new brand of shoe could make a basketball player jump higher. He found 18 basketball players who started using the shoes this season and measured how high each player could jump in the new shoes. What error did the student make in his investigation? A- he did not clearly state his research question B- There was no control group for the study C- The sample size was much too small D- The student was biased in favor of the new shoe
B- There was no control goup for the study
100
Which of the following is a testable hypothesis regarding viruses that cause the common cold? A- Microbiologists could have developed vaccines against cold viruses many years ago if they had designed better experiments. B- If microbiologists develop a vaccine against a cold virus within the next decade, its beacuse they are getting smarter C- A person who contracts a cold virus is obviously not washing his or her hands enough throughout the day D- People who wash their hands at least three times a day are more likely to contract a cold than people who do not wash their hands.
D- People who wash their hands at least three times a day are more likely to contract a cold than people who do not wash their hands.
100
a set of observations made in an experiment, in which the independent variables are not changed, to be sure that the dependent variable remains the same also
control group
200
Horseplay, practical jokes, or pranks in the classroom are- a, always against the rules, b- okay, c- not dangerous, d- okay if you're working alone
A- always against the rules
200
a controlled variable in an experiement that is kept the same from trial to trial
Constant
200
A student hypothesized that robins prefer large birdhouses to small ones. He built four birdhouses of different sizes to test his hypothesis. What was the independent variable in the student's study? A- the size of the birdhouse B- The number of birds in a house C- The location of the birdhouse D- the season of the year
A- the size of the birdhouse
200
A pest management company is testing a pesticide designed to kill the black cutworm, which commonly attacks lettuce fields. The company wants to determine whether the new pesticide is more effective at controlling black cutworm infestations than an older pesticide. Which test of the new pesticide would be an acceptable control group? A- Spray the new pesticide on a lettuce field where the older pesticide has already been applied. B- Spray the older pesticide on one lettuce field, and the new pesticide on a nearby lettuce field C- Spray the new pesticide on a lettuce field and the older pesticide on a cabbage field D- Spray the new pesticide on fields that are growing several different types of vegetables
B- Spray the older pesticide on one lettuce field, and the new pesticide on a nearby lettuce field
200
an investigation in which all variables are identified and recorded so that the investigation can be repeated.
systematic investigation
300
After completing a lab all chemical waistes should be- a- left at your lab station for the next class, b- disposed of according to your teacher's instructions, c- dumped in the sink, d- taken home
B- disposed of according to your teacher's instructions
300
an idea that can be tested by a scientific investigation
Hypotheses
300
Which unit is most appropriate for measuring the amount of water pouring into the beakers? A- mililiters B- kilograms C- kiloliters D- centimeters
A- mililiters
300
Which of the following is most useful for protecting a student's eyes from harm when mixing two compounds in a beaker? A- safety goggles B- lab apron C- latex gloves D- lab partner
A- safety goggles
300
a conclusion reached by using what we have observed and what we think to be true
inference
400
You have been injured in the lab, (cut, burned, etc.) you should- a-visit the school nurse after class, b- see a doctor after school, c- tell the teacher immediately, d- applu first aid yourself
C- tell the teacher immedeately
400
a variable that is isolated for a study in an experiment and that the experimenter manipulates
independent variable
400
Warren found the same type of bacteria in the stomachs of other ulcer patients. Based on this finding, which hypothesis would best test a possible relationship between the bacteria and the ulcers? A- If people do not have ulcers, then those people do not have the bacteria in their stomachs B-If people who are under a lot of stress tend to develop ulcers, then the stress is the primary cause of ulcers in people. C- If the bacteria are a cause of ulcers, then killing the bacteria in the stomach may decrease the number of ulcers D- If the bacteria are put into the stomach of ulcer-free people, then those people will develop ulcers
C- If the bacteria are a cause of ulcers, then killing the bacteria in the stomach may decrease the number of ulcers
400
Statistics show that a high number of people who develop lung cancer have smoked tobacco products. Which interpretation best fits these findings? A- People who smoke tobacco will develop lung cancer B- Lung cancer patients are likely to begin using tobacco products C-People who smoke tobacco products are likely to develop lung cancer D- There is no relationship to suggested by these findings
C- People who smoke tobacco products are likely to develop lung cancer
400
an experiement in which one independent variable is tested by keeping all other independent variables the same
fair test
500
The following actiity is permitted in the laboratory: a- chewing gum, b- eating, c- drinking, d- none of the above
d- none of the above
500
the factor in an experiment that changes as a result of a change in an independent variable
dependent variable
500
A toy manufacturer is investigating why its new metal toy trucks are denting much more easily than its earlier metal toy trucks. What would be most useful information for the toy company to acquire? A- the cost of manufacturing the new toy trucks B- The strength of the materials used in the new toy trucks C- The amount of time spent designing the new toy trucks D- The number of new toy trucks that have been sold
B- The strength of the materials used in the new toy trucks
500
Scientists say that the Sun appears to move in the sky because the Earth is rotating on its axis. What is this an example of? A- description B- an explanation C- an inference D- a prediction
B- explanation
500
information gathered by the senses or through measurement
observation
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