Awesome
A team of biologists wanted to determine the best way to estimate the current population size of an en‐ dangered bat, but it was very hard to count all the bats as they flew out of their cave each evening. Which scientific tool would give them the best outcome?
A) An experiment with variables and controls.
B) An observational protocol with a sample count.
C) A comparative study surveying nearby caves.
D) A research project using historical records
B) An observational protocol with a sample count
Robert Boyle is known for his discovery that the more pressure exerted on a gas, the smaller its volume.
This relationship has been shown to be true by many different experiments.
Which of the following correctly classifies this discovery?
A) observation
B) hypothesis
C) scientific theory
D) scientific law
D) Scientific Law
Which of the following questions can be studied through scientific inquiry?
A) Is it fair to have more than one best friend?
B) What type of crust makes the best pizza?
C) Do the colors purple and orange look good together?
D) What factors affect the temperature at which water changes from a liquid to a solid?
D) What factors affect the temperature at which water changes from a liquid to a solid?
Often when a group of scientists present their results from an experiment, other researchers will conduct the experiment to verify the original study’s results. Which BEST describes what the researchers are doing?
A) The researchers are being cost effective.
B) The researchers are conducting multiple trials to check for accuracy.
C) The researchers are performing a cost-benefit analysis.
D) The researchers are trying to replicate the results.
D) The researchers are trying to replicate the results.
One way to make an experiment reliable is to conduct multiple trials. Conducting the same experiment multiple times can do which of the following?
A) identify cause and effect relationships
B) identify errors or additional variables that might impact the data
C) identify the costs and benefits of a solution
D) identify the independent variable
B) identify errors or additional variables that might impact the data
What is a control group?
A) Part of an experiment that contains the same factors as the experimental group.
B) The factor measured or observed during an experiment.
A
“The total mass of the substances before a chemical change will be the same as the total mass of the substances after a chemical change.” This statement describes something that always happens in nature, without explaining why it happens. This is an example of which of the following?
A) hypothesis
B) inference
C) scientific law
D) scientific theory
C) Scientific Law
Cell theory is a scientific theory that explains that all organisms are made of cells. Which explains why cell theory is NOT a scientific law?
A) A scientific law is a logical explanation of an observation that is drawn from prior knowledge or experience.
B) A scientific law is a possible explanation for an observation that can be tested by scientific investigations.
C) A scientific law is a rule that describes a pattern in nature that does not explain why an event occurs.
D) A scientific law is an explanation of observations or events based on knowledge gained from many observations and investigations.
C) A scientific law is a rule that describes a pattern in nature that does not explain why an event occurs.
Scientists search for evidence that shows how Earth has changed over time. Which scientist is most likely to find direct evidence of this change?
A) a chemist studying the periodic table
B) a biologist studying photosynthesis
C) a geologist studying rock layers
D) an astronomer studying stars
C) a geologist studying rock layers
A scientist finds that a fossil of a species present in older rock layers suddenly disappears from the rock record. What can the scientist infer?
A) The species evolved.
B) The species became extinct.
C) Fossils cannot form in younger rock layers.
D) Fossils are more difficult to locate in younger rock layers.
B) The species became extinct
What is a hypothesis?
A) A possible explanation for an observation that can be tested by scientific investigations
B) The part of an experiment that contains the same factors as the experimental group.
A)
What is qualitative data?
A) The use of words to describe what is observed in an experiment.
B) The factors in an experiment that remain the same.
C) The use of numbers to describe what is observed in an experiment.
D) A possible explanation for an observation that can be tested.
A) The use of words to describe what is observed in an experiment.
Which is the variable that is measured or observed?
A) Control
B) Independent
C) Dependent
D) Experiment
C) Dependent
Do theories become laws?
A) No, theories are explanations. Laws are statements of what is.
B) Yes, but only after many years of evidence.
C) Yes, but only after the idea is peer reviewed over 100X.
D) Maybe
A) No, theories are explanations. Laws are statements of what is.
Which of the following statements about a controlled experiment is true?
A) All the variables must be kept the same.
B) Everything can be studied with a controlled experiment
C) Only one variable is tested at a time.
D) They cannot be performed on living things.
C) Only one variable is tested at a time
To be useful in an experiment a hypothesis must be:
A) Testable
B) Measurable
C) Observable
D) Be correct
A) Testable
Scientists hypothesize that dinosaurs may be related to birds. Which evidence supports this hypothesis?
A) dinosaur fossils with sprawling posture hips
B) dinosaur fossils with feathery exteriors
C) dinosaur fossils of flippers
D) dinosaur fossils of eggs
B) dinosaur fossils with feathery exteriors
A theory is a rule that describes a pattern in nature:
A) True
B) False
B) False
A scientific law is a rule that describes a pattern in nature.
What is a scientific theory?
A) An explanation of events based on past knowledge from a few observations.
B) An explanation of events based on knowledge from a few observations.
C) An explanation of events based on a scientific law.
D) An explanation of events based on knowledge gained from many observations.
D) An explanation of events based on knowledge gained from many observations
What is a constant in an experiment?
A) A factor that does not stay the same.
B) A factor that stays the same.
C) A factor that might change.
D) A factor that a scientist changes.
B) A factor that stays the same
A constant is a limitation put on the design of a solution.
A) True
B) False
B) False
A constraint is a limitation put on the design of a solution. A constant is something that stays the same.
What does the word criteria mean?
A) Limitations put on a design of a solution
B) Requirements or specifications for a solution to be successful
B) Requirements or specifications for a solution to be successful
What is the engineering design process?
A) A series of steps used to find solutions to specific problems.
B) Requirements or specifications for a solution to be successful.
C) Limitations put on the design of a solution.
D) A process of comparing the predicted benefits and costs of a solution.
A)
Accuracy is the confidence that can be placed in the truth of scientific findings.
A) True
B) False
B) False
Accuracy is a description of how close a measurement is to an accepted value.
What word matches this definition:
An explanation of observations or events based on knowledge gained from many observations and investigations.
A) Scientific Law
B) Trade-off
C) Scientific Theory
D) Observation
C) Scientific Theory