Module 1 Quiz Scientific Method 1 2 3 4 5 6 100 100 100 100 100 100

Module 1 Quiz Scientific Method 1 2 3 4 5 6 100 100 100 100 100 100 200 200 200 200 200 200 300 300 300 300 300 300 400 400 400 400 400 400 500 500 500 500 500 500

100 A possible answer to a scientific question (prediction) A.Hypothesis B.Control Group C.Independent variable D.Dependent variable Answer: A

200 This is the one variable that is changed in an experiment. A.Hypothesis B.Control Group C.Independent variable D.Dependent variable Answer: C

300 This is the one variable that is measured as a result of the changed variable. A.Control Group B.Independent variable C.Dependent variable D.Hypothesis Answer: C.

400 The group is left alone and not experimented on. A.Control Group B.Independent variable C.Dependent variable D.Hypothesis Answer: A

500 The number of flowers on each bush is counted at the end of the experiment. A. Independent Variable B. Dependent Variable Answer:B

100 Scientific investigations involve many steps and processes. Which characteristics define a laboratory experiment? A. hypothesis, models, and calculations B. test variables, data, and uncontrolled conditions C. data, conclusions, and unregulated environment D. independent and dependent variables, data, and controlled conditions Answer: D

200 Renee rolls a steel ball down a ramp. She conducts multiple trials by releasing the ball from varying heights on the ramp. For each trial, she measures and records the release height of the ball and the distance the ball travels away from the ramp before falling to the ground. The figure below shows the experiment. In this experiment, which variable is the independent variable? A. B. C. D. distance traveled by the ball path of ball once it leaves the ramp height from which the ball is released time is takes the ball to hit the ground Answer: C

300 Observation is the process of gathering information through the senses, including sight, sound, taste, smell, and touch. Which observation is an example of sensory data? A. B. C. D. The mass of a pebble is 25.0 g. The volume of a pebble is 5.0 cm3. A white pebble is speckled with gray spots. A pebble does not conduct an electric current. Answer:C

400 Cathy designs an experiment to investigate how well cups made of different materials maintain the temperature of a cold drink. Which step will increase the accuracy and validity of Cathy’s results? A. Use a different beverage in each cup. B. Conduct the experiment in a cool room. C. Conduct multiple trials and have another scientist repeat the experiment. D. Analyze the experimental results and organize experimental data in a table. Answer: B

500 Cindy predicts that plastic foam insulates cold drinks better than metal or ceramic materials do. To test the hypothesis, she fills cups made from these materials with equal amounts of cold water. She records the temperature of the water in each cup, using scientific thermometers, every 10 minutes until the water reaches room temperature. Which of these conditions must be the same for this experiment to be valid? A. the thermometer that is in each cup B. the starting temperature of the water in each cup C. the ending temperature of the water in each cup D. the material that makes up each cup Answer: B

100 Scientific investigations include many different steps. After which step in a scientific investigation might a scientist use results to reject an existing hypothesis and form a new hypothesis? A. Analyze data. B. Identify variables. C. Follow a procedure. D. Plan the experiment. Answer:A

200 You water three sunflower plants with salt water. Each plant receives a different concentration of salt solutions. A fourth plant receives pure water. After a two-week period, the height is measured. . A. Independent Variable B. Dependent Variable C. Control Group Answer:C

300 You water three sunflower plants with salt water. Each plant receives a different concentration of salt solutions. A fourth plant receives pure water. After a two-week period, the height is measured. A. Independent Variable B. Dependent Variable C. Control Group Answer:A

400 Three redwood trees are kept at different humidity levels inside a greenhouse for 12 weeks. One tree is left outside in normal conditions. The heights of the trees are measured once a week. A. Independent Variable B. Dependent Variable C. Control Group Answer: C

500 Three redwood trees are kept at different humidity levels inside a greenhouse for 12 weeks. One tree is left outside in normal conditions. The heights of the trees are measured once a week. A. Independent Variable B. Dependent Variable C. Control Group Answer: Control group

100 Kim conducted an investigation and decided to communicate the results to her class. Which should she use to support her conclusions? A. her data B. her hypothesis C. her technology D. her safety measures Answer A

200 Ana is in charge of studying how air quality affects the respiratory health of the citizens in her state. Which testable statement does she investigate? A. The quality of the air varies throughout the state. B. Air quality in her state is worse than it is in other states. C. Air quality has a relationship to respiratory problems. D. Air quality is worsening due to increasing population and industrialization. Answer:C

300 Daily Double! Joshua investigates the effect of varying amounts of sunlight on the rate of plant growth. He experiments by exposing seedlings to different amounts of sunlight each day. He stops the experiment when each seedling reaches 20 cm in height. Which variable does Joshua control in the experiment? A. rate of plant growth B. amount of water per plant per day C. amount of sunlight per plant per day D. time needed to reach a height of 20 cm Answer Graph

400 What is the test variable (independent variable) in Alyssa's experiment? A. the volume of water she pours B. the speed she pours the water C. the height of the tray D. the amount of sand Answer:C

500 What can be concluded from the data on this graph? A. The speed of sound waves is constant. B. Sound waves travel faster than light waves. C. Both air and water transmit sound waves at the same speed. D. The speed of sound waves depends on the medium through which they travel. Answer:D

100 this variable data is plotted on the horizontal (x) axis of a graph Answer: Independent

200 this variable data is plotted on the vertical (y) axis of a graph Answer: Dependent

300 Noreen performed an experiment to investigate how an unbalanced force affects the motion of a ball. She plotted the graph shown to include in her lab report. What conclusion could Noreen make in her lab report based on these results? A. The ball maintained its direction of motion. B. The ball changed the direction in which it moved. C. The speed of the ball increased in the experiment. D. The speed of the ball decreased in the experiment. Answer:D

400 Kelsey plays soccer and gets grass stains on her shorts. She uses several types of laundry detergent to try to remove the stains, but none of them work. She makes the hypothesis that laundry detergents are not able to remove grass stains from clothing. Which best describes the evidence that fails to support the hypothesis? A. The stain is removed when a different type of laundry detergent is used. B. The stain fades when the clothing is hung outdoors and exposed to sunlight. C. The stain does not go away after being repeatedly laundered in water with no laundry detergent. D. The stain is removed when it is treated with a stain remover before it is washed using laundry detergent. Answer: A

500 You are designing an experiment to determine whether plants grow faster with or without water. Which should be varied in order to conduct a controlled experiment? A. the type of soil in which you grow the plants B. the temperature of water you give to the plants C. the amount of sunlight your plants receive D. the amount of water you give to the plants Answer:D

100 What can be concluded about the bacteria from reading this graph? A. They thrive at exactly 30 C. B. They cannot tolerate temperatures above 50 C. C. They prefer temperatures between 20 C and 30 C. D. They prefer warmer temperatures to cooler temperatures. Answer:C

200 Science is systematic knowledge of the physical or material world gained through observation and experimentation. Which best describes the part of the physical world that is studied in biology? A. living things B. energy and forces C. matter and its interactions D. Earth materials and structures Answer:A

300 Scientists conduct many types of scientific investigations. Their efforts often include fieldwork, surveys, models, and experiments. Which statement about scientific investigations is true? A. They rarely involve the collection of data under controlled conditions. B. They follow exactly the same steps because there is only one scientific method. C. They include multiple trials to increase the consistency of the data that are collected. D. Their primary focus seldom includes comparing or describing the unregulated world. Answer: C

400 In this experiment, which variable is the dependent variable? A. distance traveled by the ball B. C. D. path of ball once it leaves the ramp height from which the ball is released time is takes the ball to hit the ground Answer: D

500 Most hypotheses of experiments are not accepted until other scientists verify the results. Which process occurs when one scientist carries out the same procedures used by another in order to verify the results? A. repetition B. replication C. trial D. validation Answer:B