Dean has been collecting data on the health risk related to eating too much fast food. Which of these would NOT be a valid conclusion that Dean could develop?
A. The food in fast food restaurants tastes really good.
B. People who eat fast food three times a week are more likely to be obese.
C. The chemicals found in the "special sauce" can be linked to acid indigestion.
D. Eating at fast food restaurants twice a week may lead to increased chance of heart attack.
A. The food in fast food restaurants tastes really good.
In order for a scientific investigation to be considered valid, the evidence produced by the investigation must be
A. in the form of a graph.
B .a way to prove the hypothesis.
C. replicable by others.
D. conducted in a lab.
C. replicable by others.
When an experiment is repeated and the new results are different from the original results, what could you assume to be true?
A. The experiment is flawed and must be redesigned.
B. The results from the second experiment can be ignored.
C. Both sets of results may be inaccurate for a variety of reasons.
D. There is nothing wrong with either results, they are both accurate.
C. Both sets of results may be inaccurate for a variety of reasons.
Kyle's science class is doing an experiment to find out about the effects of different temperatures on jumping beans. The teacher has divided the class into different groups. Each group will conduct their experiment and report back to the class on their findings.
During which step in the investigation will Kyle's science group be sharing their observations among themselves on the movements of the jumping bean?
A Writing a paragraph that evaluates the investigation.
B Writing a plan which tells what the group will be doing and how.
C. Writing a short statement stating the question to be investigated.
D. Carrying out the investigation and recording the observations and measurements.
D. Carrying out the investigation and recording the observations and measurements.
Which of these would BEST describe the difference between an experiment and a field study?
A Experiments are much more important to science than field studies.
B In a field study, it is much harder to control variables than in an experiment.
C In a field study, it is easier to control the variables than in an experiment.
D Experiments are always done by professional scientists, while field experiments can be done by anyone.
triple the amount of Points
B In a field study, it is much harder to control variables than in an experiment.
The ability to reproduce results is an important part of any science experiment. Identify the word that best describes this statement?
A. inference
B. observation
C. replication
D. hypothesize
C. REPLICATION
A student observes that bread molds faster in a warm, dark pantry than in the refrigerator. She wants to test how temperature affects mold growth.
Which part of her experiment would most likely require creativity?
A. Measuring the amount of mold using a ruler
B. Designing a fair test using different temperatures
C. Writing a list of supplies
D. Counting the number of mold spots
B. Designing a fair test using different temperatures
Jamal and Jin live in different parts of the state. Jamal lives in the mountains and is not near a city. Jin lives at sea level, near a city.
They are talking on the phone at night. They look at the same part of the sky with the same kind of telescope. They expect to see the same number of stars, but they do not. Jamal is able to see many more stars than Jin. They want to find out why.
What should Jamal and Jin do to find out why they see different numbers of stars?
A.They should assume Jamal’s telescope is broken.
B.They should discuss the reasons for the difference.
C.They should guess that the sky over Jin has fewer stars.
D.They should believe one of them made a counting mistake.
B.They should discuss the reasons for the difference.
Jayden, Eric, and Mark are in science class. They want to know what type of soil is best for growing seeds. Each boy has three cups of soil: one sand, one clay, and one peat. They plant a seed in each cup. For two weeks, they care for the seeds in the same way and record what they observe. At the end, the teacher asks them to meet to compare their results.
Why would the teacher ask the students to meet to compare their results?
A. so they can copy each others’ work
B. so they can discuss their evidence
C. so they can all have the same answer
D. so they can decide whose work is best
B. so they can discuss their evidence
Which statement is NOT true concerning setting up an experimental design?
A it accurately tests your hypothesis when set up correctly
B A good experimental design always proves the hypothesis correct
C. The stronger your experimental design is, the more reliable your results will be.
D it describes the manner in which you test your hypothesis through experimentation
B A good experimental design always proves the hypothesis correct
Sally was disappointed with the lunch being served at school. She decided to take a student survey about the kinds of food students liked to eat. Is Sally conducting a scientific experiment in this case?
A. Yes, the is conducting research.
B. No, she must compile her data in some way.
C. No, a survey is not an experiment.
D. Yes, Sally is collecting opinions that are a form of qualitative data.
C. No, a survey is not an experiment.
Which thought or activity is scientific?
A. Thinking about a sick friend and hoping that they get well soon.
B. Wondering if getting a vaccination in the arm or in the leg would hurt worse.
C. Testing three different ointments to see which one helped a rash go away quickest.
D. Reading a book about ways that ancient civilizations treated illnesses and injuries.
C. Testing three different ointments to see which one helped a rash go away quickest.
Roseanne and Jackie were asked to design and create a paper airplane that would stay in the air for as long as possible. They began by folding printer paper into four different planes. They then tested the flying time of the planes by throwing them and timing their flights with a stopwatch. They compared results to select the plane to use in the competition.
According to the teacher's criteria, what data did Roseanne and Jackie MOST LIKELY use to select their best airplane?
A.how far their plane went
B. the planes' time in the air
C. the plane with the lowest weight
D the plane with the widest wing-span
B. the planes' time in the air
Several classes of students wanted to know if the temperature of the soil changed with the temperature of the air. They recorded the temperature of the soil and the air in the same place, three times a day, for three days. Each class made a chart. At the end, two classes compared charts. Their results were different.
What could the students in the two classes do to figure out why their results were different?
A.They could see which chart looks the best.
B.They could go to a third class and copy their results.
C.They could check each others’ work and look for mistakes.
D.They could let the teacher tell them whose numbers are correct.
C.They could check each others’ work and look for mistakes.
When scientists share knowledge, they help each other with scientific research. Why do scientists share knowledge?
A. New knowledge leads to new discoveries.
B. Scientists like to prove what they know.
C. Scientists like to prove each other wrong.
D. Research is boring unless you tell someone.
A. New knowledge leads to new discoveries.
Mr. Hernandez is explaining how the gravitational forces of the Moon and the Sun pull the water in Earth’s oceans, causing tides. He uses a basketball to represent the Sun and a golf ball to represent the Moon. What would be a good object to represent Earth and to show the effects of gravity on it?
A a tennis ball
B another basketball
C a light bulb connected to a battery
D a balloon that is not fully inflated
D a balloon that is not fully inflated
Identify which statement describes a scientific law.
A.Water freezes at 100°C
B. The universe is expanding.
C.Matter cannot be created or destroyed.
D. More crimes take place during the full moon.
C.Matter cannot be created or destroyed.
Which is NOT true about the discovery of new scientific evidence and theories?
A.New theories are always the truth.
B.Theories can never be said to be the absolute truth.
C. Old theories might be discarded in favor of new theories.
D. Theories are refined as new scientific evidence discovered.
A.New theories are always the truth.
Everyday thought is somewhat different from scientific thought. One action listed here is a trait of scientific thought. That action is
A. makes claims.
B.forms opinions.
C.test hypotheses.
D.makes observations.
C.test hypotheses.
Five groups of students in Mr. Walker's science class performed an experiment to determine the effect of salt on the boiling point of water. Each group dissolved 5g of salt in 100mL of distilled water, heated the solution and recorded the boiling point with a thermometer that had divisions of 0.1°C.
Each group obtained exactly same boiling point for the salt solution, 100.8°C. Are the results valid?
B No, because it was not a controlled experiment
Scientists first found dinosaur fossils about 1820. The fossils suggested that dinosaurs were large, slow, reptiles. This view was widely accepted for decades. However, in 1960, scientists began to challenge the idea. More recently, several findings showed that some dinosaurs were closely related to birds, and had active, agile bodies.
Which conclusion is BEST supported by this information?
A.Most of the early dinosaur fossils were likely fakes.
B.The earlier ideas of dinosaur fossils were unscientific.
C.Scientists have had to revise accepted ideas of dinosaur biology.
D.Scientists interpreted the available fossil evidence wrongly until 1960.
C. Scientists have had to revise accepted ideas of dinosaur biology.
A ___________ describes what happens in the natural world, while a ____________ explains how things happen.
A. theory; hypothesis
B. theory; scientific law
C. scientific law; theory
D. hypothesis; scientific law
C. scientific law; theory
Experiment:
If a black, white, red, green, blue and yellow piece of paper is placed under a lamp, which color paper will absorb the most heat?
Materials:
Procedures:
Is this a valid experimental design?
A. Yes, because paper is cheap to use.
B. No, because the paper might catch on fire.
C No, too many different color papers are being tested.
D Yes, steps were outlined and there was one manipulated variable.
D Yes, steps were outlined and there was one manipulated variable.
Kyle's science class is doing an experiment to find out about the effects of different temperatures on jumping beans. The teacher has divided the class into different groups. Each group will conduct their experiment and report back to the class on their findings.
It is important that scientists cooperate and share their ideas and discoveries. During which step in the investigation will Kyle's science group be cooperating with each other to decide how to record temperature measurements?
A. Writing a paragraph that evaluates the investigation.
B Writing a plan which tells what the group will be doing and how.
C. Writing a short statement stating the question to be investigated.
D. Carrying out the investigation and recording the observations and measurements.
B Writing a plan which tells what the group will be doing and how.