Show:
Experimental Design
Formulating a Hypothesis
Lab Tools
Analysis and Conclusions
Communcation
100
The factors that are kept the same throughout an experiment.
What are the constants.
100
It is clear, testable and written as a statement.
What is a hypothesis.
100
A compass uses the property of _______ to indicate direction.
What is magnetism.
100
Scientific conclusions that are influenced by the opinions or beliefs of the experimenter are ______.
What is biased?
100
Which of the following graph types would be most appropriate for charting the change in height of a pea plant as time passes?
What is a line graph?
200
Yusef is doing an experiment to find out how the amount of sunlight affects the growth of a seedling. He has three identical pots containing grass seeds he planted at the same time. He puts them in windows that receive different amounts of sunlight each day. Every day, Yusef looks at the pots and records his observations. What is the variable in Yusef’s experiment?
What is the amount of sunlight.
200
Lyle noticed that many gardening books recommend adding coffee grounds to soil  as a fertilizer. What question can he ask about this observation that can lead to a hypothesis?
Does caffeine help boost plant growth?
200
Sergio is planning an experiment about phase changes. As a part of the procedure, he must measure and use exactly 25 milliliters of water. What tool should Sergio choose to most accurately measure the water?
What is a graduated cylinder?
200
Scientists tested ground turkey samples from supermarkets for the presence of  antibiotic-resistant bacteria.  They found that samples from turkeys raised organically, without being given antibiotics, contained fewer antibiotic-resistant bacteria than samples from turkeys given antibiotics as they were raised. Which is the most logical argument as to the sequence of events?
What is The samples from turkeys given antibiotics as they were raised contained  more antibiotic-resistant bacteria because the exposure to antibiotics  caused the bacteria to form a resistance to them.
200
During a science experiment, Tina and her lab partners measured the solubility of  sugar in one liter of water.  How should she write this step in her lab report? a)We measured the solubility of sugar in one liter of water b)I measured the solubility of sugar in one liter of water. c)The solubility of sugar was measured in one liter of water.
What is c)The solubility of sugar was measured in one liter of water.
300
Meredith notices that different plant fertilizers are made up of different chemicals. Some fertilizers are high in nitrogen. Other fertilizers are high in phosphorus. Meredith hypothesizes that nitrogen-rich fertilizers are best to grow fruit crops such as strawberries. When she is designing her experiment, what should be her variable?
What is the type of fertilizer.
300
Bernie is designing an experiment to test how temperature affects the strength of  magnets.  Which of these variables should remain constant in this experiment?
What is the magnets used
300
Jamie is conducting an experiment that investigates friction. In the experiment, wooden blocks of different shapes and sizes are allowed to slide down a ramp. Which of the following tools could Jamie use to help determine the area of the base of each wooden block?
What is a ruler?
300
Frank conducted an experiment to demonstrate how elevation affects the boiling point of water.   Using the same volume of water, he measured the boiling points at five different elevations.   He conducted one trial for each elevation and reported  his results to the class. How is this likely to create an error in the study
What is A limited number of trials causes mistakes to go unnoticed.
300
Ruben recorded the amount of rainfall in his town each day for an entire month. Since there were so many different rainfall amounts, he categorized the data into five different rainfall ranges. Which graph type should he use to display the number of days that fell into each range?
What is a histogram?
400
Adam wants to find out how pressure affects the force of gravity acting on dust particles in a cloud. Adam designs an experiment in which he places dust particles in a pressure chamber. He is able to adjust the pressure in the chamber from 0 Pascals to 780 Pascals. What should Adam use as his control group?
What is a sample of dust particles at 0 Pascals.
400
Connor leaves his bicycle in the garage, but his brother Jordan leaves his bicycle  outside. Connor notices that Jordan's bicycle chain is rusty, but his own chain is  not.  Based on his observation, which is a hypothesis that Connor can test?
What is If metal is exposed to air and moisture, then it will rust faster than metal  kept in a closed, dry place.
400
Allison is trying to identify the type of bacteria found on common surfaces like doorknobs, table tops, etc. For this experiment, she will collect samples of bacteria and allow them to grow for several days. Then, she will observe the bacterial colonies that are formed and compare their appearance with pictures of bacterial colonies in her textbook. Which piece of equipment will Allison most likely use for the growth of the bacteria?
What is Petri dish?
400
Tony shook up a container of orange juice and classified it as homogeneous.   After some time, two different layers could be seen in the container, and his teacher told him the solution was heterogeneous.  What is the most logical argument as to the sequence of events
What is The tiny pieces of fruit separated from the juice, settling on the bottom of  the container.
400
A student recorded the numbers of different species of birds she spotted in her backyard during spring.   She calculated what percentages of the total birds she saw were made up b various species.  What graph would best represent the data?
What is a circle graph?
500
Dan wants to test the effects of different amounts of antibiotic on bacteria. While setting up his experiment he makes sure to use the same type of antibiotic, the same type of bacteria, and the same type of incubator for each trial. What phrase best describes the part of the experiment Dan is in at this time?
What is setting up constants.
500
Cory hypothesized that because copper conducts heat better than glass, water will  boil faster in a copper pot than in a glass pot.  In order to test this hypothesis, which of the following should be the dependent  variable?
What is the time it takes the water to boil.
500
An instrument that could be used to measure the force needed to pull an object at a constant speed.
What is a spring scale?
500
Ed has two citrus trees at his home. He keeps one outside on a shaded patio, and the other indoors near a large window and a lamp. The indoor tree receives more light and experiences more stable temperatures than the outdoor tree. He noticed that the indoor tree grew faster and produced bigger oranges than the outdoor tree. He installed a grow-lamp near the outdoor tree so that it would receive as much light as the indoor tree, but there was no change: the indoor tree continued to outgrow the outdoor tree. Based on this investigation, what would be the next logical question that Ed should address?
How does temperature affect the citrus trees?
500
A student is graphing the results of an investigation that  show how temperature affects the number of paper clips a magnet can attract. How should the y-axis be labeled?
What is Number of Paper Clips Attracted