Show:
Designing Experiments
Choosing Tools & Procedures for Experiments
Organizing Data
Drawing Conclusions, Bias and Errors
Technological Design & Bioengineering
100
Which term below best describes a hypothesis? A. the result of an experiment B. a well-tested explanation for why something happens C. a random guess about what causes something D. a possible explanation of an observation or result
What is a possible explanation of an observation or result?
100
What should you do if you are not sure how to use a piece of laboratory equipment? A. Stop working on the experiment. B. Ask another student to show you how to use the equipment. C. Check the lab instructions for the correct techniques. D. Make your best guess about how it works.
What is check the lab instructions for the correct techniques?
100
Which of the following accurately describes what scientists mean by a controlled experiment? A. The outcome is controlled. B One variable remains fixed while other variables are changed. C. One variable changes throughout the experiment while all other variables remained fixed. D. Experimental results are obtained by computer models.
What is one variable remains fixed while other variables are changed?
100
A report of which of the following observations would be inconsistent with current theories about Earth? A. Satellite data that shows continents moving. B. Measurements show Earth's core is made of molten rock. C. Earth's revolution around the sun takes slightly more than 365 days. D. Observations show air pressure is lowest at sea level.
What is observations show air pressure is lowest at sea level?
100
Which of the following is an example of technology? A. a pair of pliers B. a way to breed a new plant with desirable characteristics C. manufacturing robots that assemble automobiles D. all of the above
What is all of the above?
200
What helps focus an investigation? A. taking a test B. answering a question C. asking a question D. working with lab equipment
What is answering a question?
200
A pan scale is used to measure the mass of a piece of metal which was 12 grams. A displacement is done to measure the volume of the piece of metal which is 6 mL. Determine the density of the metal.
What is 2.0 g/ml?
200
Which type of graph is useful for showing parts of a whole? A. line graph B. bar graph C. histogram D. circle graph
What is circle graph?
200
How does scientific writing differ from literary writing? A. The two types of writing have different purposes. B. Scientific reports are always written in English. C. Science writing is shorter than literary writing. D. Science writing is about facts, and literary writing is fiction.
What is the two types of writing have different purposes?
200
As part of an engineering design process, engineers want to make a less expensive disposal towel. Which of these materials would they most likely want to test? A. silk B. iron C. paper D. fiberglass
What is paper?
300
A student measures how a snake's body temperature changes in response to the surrounding air temperature. What is the dependent variable in this investigation? A. the snake's body temperature B. the temperature of the air C. the species of snake D. the thermometers that are used
What is the snake's body temperature?
300
A student wants to find out the precise volume of a coin. Which tool i best for measuring the volume of the coin? A. 25 mL beaker B. 100 mL beaker C. graduated cylinder D. scale
What is graduated cylinder?
300
Which type f graph is best to use to show how many rainy days there were in each month of the year? A. line graph B. bar graph C. histogram D. circle graph
What is histogram?
300
You are outdoors on a cold winter day. The sun is shining brightly. A strong wind blows out of the north. You wrap a scarf tightly around your neck. You shiver. Which pair of words represents a cause-and-effect relationship? A. scarf; shiver B. wind; shiver C. shiver; wind D. sun; shiver
What is wind; shiver?
300
Which of these is an unintended consequence of technology? A. communicating with people in other countries by instant messages B. using your computer to find information about an illness from a library far from you home C. people finding your personal information by using their computers D. being able to purchase a CD online that is not available in a local store
What is people finding your personal information by using their computers?
400
In an experiment, you change the pressure to find out how it affects the volume of a gas. You make sure to keep the temperature constant. What is the independent variable in the experiment? A. the temperature of the gas B. the volume of the gas C. the gas D. the pressure
What is the pressure?
400
A student wants to learn how robins build nests. The student wants to observe a robin without disturbing or frightening it. Which tool will allow the student to make observations without disturbing the bird? A. compound microscope B. telescope C. pan balance D. hand lens
What is telescope?
400
Which of the following is a diagram used to find the possible traits of offspring? A. Punnett square B. line graph C. pedigree chart D. computer model
What is Punnett square?
400
After swimming in the ocean, Clifton sits in the sun to dry off. After a while, he notices that he has small white crystals on his skin. Analyze the explanations below as to their strengths and weaknesses based on this evidence. Which is the most reasonable explanation of what happened? A. The water evaporated and attracted dust to Clifton's skin. B. The white crystals are dead skin cells that are being shed. C. Clifton has developed a rare skin disorder. D. Salt that is dissolved in the water remained on Clifton's skin after the water evaporated.
What is salt that is dissolved in the water remained on Clifton's skin after the water evaporated?
400
Which of these is the best example of a product developed by bioengineers? A. the internet B. cars that use less fuel C. bacteria that produce silk D. a new metal alloy
What is bacteria that produce silk?
500
Scientists are conducting tests to determine a drug's effectiveness and its potential side effects. Their tests include two groups: a group of people who are given the drug and another group who are given a sugar tablet instead of the drug. What is the role of the group who are given a sugar tablet instead of the drug? A. They are the test group. B. They are the control group. C. They are the independent variable in the experiment. D. They are the dependent variable in the experiment.
What is they are the control group?
500
Which two tools could be used to determine the speed at which a person runs? A. calculator and meter stick B. stopwatch and meter stick C. meter stick and Celsius thermometer D. stopwatch and Celsius thermometer
What is stopwatch and meter stick?
500
Find the median of {55, 21, 21, 69, 71}. A. 21 B. 71 C. 55 D. 47.4
What is 55?
500
Which factor is most likely to introduce bias or error into an experiment designed to determine which brand of bar soap kills bacteria most effectively? A. using different types of soap B. using different amounts of soap C. using the same amount of bacteria for each trial D. having the bacteria on identical surfaces
What is using different amounts of soap?
500
Which of the following is an adaptive bioengineered product? A. liquid pesticides spray for plants B. fertilizer that can be put in the soil for plants C. gene introduced into a plant that helps it control the pest when the pest tries to eat the plant D. pesticide dust for plants
What is gene introduced into a plant that helps it control the pest when the pest tries to eat the plant?