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Sam and his Dad were trying to combat the fire ants in the backyard. They tried several brands of fire ant "killing" chemicals but none worked. Finally, Sam's Dad decided to try an old-time idea: pouring grits on the mounds.
What question could be used to guide Sam's study of fire ants?
Why is it so difficult to kill fire ants?
If grits are poured in a fire ant mound, then the ants will die.
Do grits work better at killing fire ants than commercial products?
Will ants eat grits and die when grits are poured in a fire ant mound?
In this technological age, today's students are faced with online educational opportunities at both the high school and post-high school level. Many educators wonder how effective such online courses really are. Imagine you are an educator designing an online course. Before beginning, you decide to conduct a study about the effectiveness of online courses.
Which research question would be MOST appropriate to guide your study?
What are the strengths and weaknesses of online courses?
How do students' grades compare in on-line versus traditional courses?
How do standardized exam scores of online courses compare with standardized exam scores of traditional courses?
How does course completion of online courses compare with completion of traditional courses?
Mrs. Roberts' class was designing science experiments. Carl and his partner decided to use the outdoor classroom as their laboratory. Since there was a bird feeder in the outdoor classroom, they decided to design an experiment about the feeding habits of birds in their area.
Which question would be MOST appropriate to guide the scientific investigation?
What do birds eat?
What type of seeds do birds prefer?
Which seeds do our feeder birds prefer?
Which types of seeds do our feeder birds eat ?
Sam is studying the effects of temperature change on a specific enzyme, c at al as e . This enzyme is found in cells and helps break down hydrogen peroxide. As part of her project, she measures the rate at which hydrogen peroxide is broken down by catalase at 20, 25, 30, and 35 degrees C.
Which question BEST describes Sam's science research project?
How are enzymes affected by changing temperature?
Is catalase able to function at all temperatures?
How is the enzyme catalase affected by changes in temperature?
Can cells survive if the temperature falls to 20 degrees Celsius?
Joanna has been growing tomatoes. She noticed that the tomato plants close to the busy street did not produce nearly as many tomatoes as the plants which were closer to her house. Which of these would be a question she could ask to help investigate what has happened with the tomatoes?
Why do tomatoes grow best near the house?
Do tomato plants grow better with lots of water?
Does the exhaust from cars affect the growth of tomatoes?
Will tomato plants become bigger if given more fertilizer?
Hemlock woolly adelgid is an insect pest to hemlock trees. It was introduced in the United States during the 1920's. It is not native to the United States and has few natural predators. To control this insect pest, scientists identified a species of predatory beetle, ( Pseudoscymnus Tsugae). They hope to introduce this beetle to areas where the woolly adelgid is destructive, reduce the woolly adelgid population, and minimize the damage caused to hemlock trees.
Which of these questions BEST summarizes the research described?
Are hemlock trees important to the ecosystem?
How does the woolly adelgid kill hemlock trees?
Can insect pests be used to control damaging predators in sensitive environments?
Can predatory beetles help reduce environmental damage caused by the woolly adelgid?
Jonathan is learning about water conservation. He learns that the average household in the United States uses 293 gallons of water per day. Jonathan makes a chart that shows the percent of water that each indoor fixture uses in the average U.S. household. He would like to use this chart to determine which indoor fixture uses the most water in his own home. Then, he can replace this fixture with a more efficient, water-saving fixture.
What would be an appropriate research question to guide Jonathan's research project?
How can we use less water at home?
How can the United States conserve water?
Which fixture uses the most water in our home?
Do shower heads use more water than sink faucets?
Which problem can NOT be answered by experiment?
Do ultraviolet rays cause skin cancer?
Does a certain drug kill the AIDS virus?
Which wavelength of light has the most energy?
Did continental drift cause the extinction of the megalodon?
John and Sven were walking down the street when they noticed a cat being chased by a dog. Eventually, the cat ran up a tree. The dog tried and tried to climb the tree, but was unsuccessful. The dog left and the cat climbed down, safe.
What is the BEST question to help John and Sven answer what just happened scientifically?
Why do dogs chase cats?
How are dogs and cats different?
Are cats genetically programmed to climb trees?
What traits allows cats to climb trees better than dogs?
Which question would be MOST appropriate to guide a scientific investigation?
Which cup material is the best insulator?
Which room deodorizer smells the sweetest?
What is the effect of playing video games on memory?
In a taste test, which soft drink tasted better, Coke or Pepsi?
Plant growth is dependent on the amount of fertilizer applied. That was the hypothesis Mel and Bill decided on for their science project. They planted identical seeds in the same potting mix, in similar pots. Each pot received the same amount of water and all the pots were placed in the same location in the greenhouse. Mel and Bill’s data was summarized after three weeks.
What would be an appropriate research question to guide this scientific investigation?
Where do plants grow best?
What influences plant growth?
Does varying the amount of fertilizer influence plant growth?
How does location and fertilizer amounts influence plant growth?
In this technological age, today's students are faced with online educational opportunities at both the high school and post-high school level. Many educators wonder how effective such online courses really are. Imagine you are an educator designing an online course. Before beginning, you decide to conduct a study about the effectiveness of online courses. The research question guiding your study is: How do exam scores of online courses compare with exam scores of traditional courses? Your data provides a quantitative comparison of the two types of courses. You determine that test grades are significantly higher when students take online courses.
What question would NOT be appropriate for further quantitative study of the topic of online versus traditional courses?
What are the strengths and weaknesses of online courses?
Which courses do more students utilize, online or traditional?
Which type of course is completed in the shortest amount of time?
Which courses have the higher enrollment numbers, online or traditional?
Mrs. Roberts' class was designing science experiments. Carl and his partner decided to use the outdoor classroom as their laboratory. Since there was a bird feeder in the outdoor classroom, they decided to design an experiment about the feeding habits of birds in their area. The research question that guided their experiment was: Which types of seeds do our feeder birds eat? Carl and his partner determined that the birds preferred sunflower seeds to all other types of seeds. The boys conducted their research during March, April, and May.
What would be the MOST appropriate question for future research on the feeding habits of birds?
Do birds eat the same thing all year long?
How do bird seed choices vary with bird species?
What types of seeds do birds prefer to eat in the spring?
How do the seeds eaten by birds in winter compare to seeds eaten in spring?
While walking home on a dark night, Joanna saw a bright light in the sky and concluded that it must have been a spaceship from another planet.
Which of these questions could Joanna answer using scientific methods of investigation?
Can aliens read our minds?
Does Joanna actually believe in aliens?
What is the aliens spacecraft made from?
What percent of people in the area saw a bright light that night?
Which question cannot be answered with the collected data?
What year was the moose population at its highest?
What year was the moose population at its lowest level?
What year did the moose population begin to rebuild and recover?
What year was the moose considered a species that should be eliminated?
According to the scientific method, how would you test a hypothesis?
use false data
communicate your results to others
design and conduct an experiment
collect information on the Internet
Susie places 3 beakers in the freezer. The first beaker contains water only, the second contains water and salt, and the third contains a water and sugar solution. Susie recorded the temperature and the time at which each mixture froze.
Which is the most appropriate hypothesis for her experiment?
Salt affects the freezing point of water.
The addition of salt raises the freezing point of water.
The addition of a sugar lowers the freezing point of water.
The addition of different substances affects the freezing point of water.
Will notices that crickets seem to chirp more frequently at night in June than they do in October. He asks himself, "How do temperature changes affect how often crickets chirp"? If he were to perform an experiment, which of these statements would be the best hypothesis?
Crickets are inactive in October.
Do crickets like warm weather better than cold weather?
Crickets chirp more frequently as temperature increases.
Crickets chirp for many reasons, and temperature is probably one reason.
Raul and Tyree have open cans of soda. The can A is left sitting on the table while the other cans B and C are each heated on a hot plate. Can B is heated to a much higher temperature than can C. The students then monitored the cans for expansion.
What would be a reasonable hypothesis for this experiment?
Higher temperature causes greater expansion in aluminum cans.
Different sodas cause different amounts of can expansion.
Aluminum burns when heated on a hot plate.
Cans expand when heated.
If a student notices that frogs are all gathering at one end of the pond the student has done what?
observed
experimented
hypothesized
collected data
A ______________ is a prediction of an outcome and the basis for experimentation.
conclusion
constant
hypothesis
variable
Which question can be answered by an experiment?
Do sugar substitutes cause cancer?
Did an ice age kill off the mastodons?
What caused the extinction of the dinosaurs?
Are all people susceptible to the Hantavirus?
During chemistry class your teacher challenged you to dissolve four salts as quickly as possible in a specific volume of water. Each group had to pick a variable to test, a variable that would speed up the dissolving process. Each group had to design an experiment using the steps of the scientific method.
The teacher began the experiment with the research question: How can you speed up the dissolution of salt in water. Your group stated: If the water temperature increases, the dissolving time of the four salts will decrease.
Your statement can BEST be described as your group's
hypothesis
law
theory
variable
The table shows the average population of two competing weeds over a square meter of ground in a Georgia field. The table also gives the average rainfall for five successive years.
If there was an extended drought in this area, what would be a reasonable prediction?
The population of both weeds would be reduced, but about equal.
Sweet peas will increase in number and gradually outcompete chicory.
Chicory will increase, because sweet peas appear to be sensitive to drought.
Both weeds will increase in population, because the drought will increase competition between them.
To test acidity levels of water, scientists test pH. As acid rain falls, the pH level of the water in lakes and streams decreases. While certain animals can tolerate low pH levels, others are extremely sensitive to the effects of acid rain and cannot live under these conditions.
Candice is working on a project to determine whether acid rain is causing a decrease in the number of bass and mayflies in a lake in her hometown.
Candice takes a sample of the pH level of the lake, and she finds that the pH level is 5.4. What might Candice predict as a result of her findings?
The lake's pH level of 5.4 is safe for both bass and mayflies, but not for frogs.
The lake's pH level of 5.4 will cause a decrease in the amount of bass and mayflies.
The lake's pH level of 5.4 will affect the number of bass, but probably not the mayflies.
The lake's pH level of 5.4 will not affect the survival of any of the animals listed in the chart.
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