Developing & Conducting Investigations Study Cards – Flashcards
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independent variable
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The part of an experiment that is changed by the scientist
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conclusion
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The part of an experiment where you analyze the results
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if, then, because
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Three words that should appear in a hypothesis
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Scientific Method
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A procedure that is used by scientists to solve a problem
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hypothesis
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The part of an experiment where you predict results.
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dependent variable
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The part of an experiment that is measured by the scientist.
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A study was done to find if different tire treads affect the braking distance of a car. What is the independent variable?
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different tire treads
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A study was done to find if different tire treads affect the braking distance of a car. What is the dependent variable?
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braking distance
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The time it takes to run a mile depends of the person's running speed. What is the independent variable?
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person's running speed
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The time it takes to run a mile depends of the person's running speed. What is the dependent variable?
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time it takes to complete the mile
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The height of bean plants depends on the amount of water they receive. What is the independent variable?
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the water they receive
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The height of bean plants depends on the amount of water they receive. What is the dependent variable?
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height of the bean plants
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What is one reason you would do background research?
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1. safety 2. better predict results 3. connect it to the real world
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The distance a paper airplane travels depends on the length of the airplane. What is the independent variable?
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length of the paper airplane
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The distance a paper airplane travels depends on the length of the airplane. What is the dependent variable?
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the distance the plane travels
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Does the number of times you dip a wand into bubbles affect the number of bubbles made? What is the independent variable?
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number of times the wand is dipped into the bubbles
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Does the number of times you dip a wand into bubbles affect the number of bubbles made? What is the dependent variable?
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how many bubbles are made
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What procedure is used by scientists that helps them solve a problem or answer a question?
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scientific method
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What is the term that means an educated guess or prediction?
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hypothesis
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What variable is used to collect data from?
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dependent variable
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What variable does the scientist change to perform the experiment?
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independent variable
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What is the part of the scientific method that discusses results and tells whether the hypothesis was correct or incorrect?
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conclusion
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What three words should be in your hypothesis?
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if, then, because
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Identify the independent variable in the question: How does the temperature of clay affect how easy it is to mold into a shape?
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temperature of the clay
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Identify the dependent variable in the question: How does the temperature of clay affect how easy it is to mold into a shape?
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easiness to mold the clay
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What measurement tool is used to measure the mass of an object?
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triple beam balance
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What measurement tool is used to take the temperature of a substance?
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thermometer
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What measurement tool is used to measure length?
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ruler, meter stick
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What measurement tool is used to measure the volume or capacity of a liquid?
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graduated cylinder
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Which kind of data is collected using numbers?
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quantitative
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Which kind of data is collected using your senses?
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qualitative
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Make 2 qualitative observations about your laptop.
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black, bright screen
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Make 2 quantitative observations about your laptop (you can make them up, but use the correct words and make them realistic!)
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.8 kg, 44 cm long
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Write a possible hypothesis for the question: Which type of soda will people most like in a taste test?
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If different soda brands are tested, then people will prefer Coke, because it is more popular.
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What measurement tool? mL
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graduated cylinder
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N or L? The marble had a mass of 4 g.
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Quantitative (N)
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N or L? The ice is cold.
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Qualitative (L)
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N or L? The coke can has 255 mL of soda.
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Quantitative (N)
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What is qualitative data?
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Data collected using observations from the 5 senses.
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What measurement tool? degrees Celsius
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thermometer
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N or L? The temperature is 30 degrees C.
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Quantitative (N)
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N or L? The movie was long.
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Qualitative (L)
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N or L? The football game lasted 60 minutes.
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Quantitative (N)
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N or L? The wall is green.
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Qualitative (L)
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N or L? The dog was growling.
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Qualitative (L)
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N or L? The concert was loud.
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Qualitative (L)
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What measurement tool? m
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meter stick
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What measurement tool? g
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triple beam balance
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Write a hypothesis: Which brand of batteries lasts the longest?
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If brands of batteries are tested, then Energizer will last the longest, because the Energizer bunny ads are funny. (Answers may vary)
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What is quantitative data?
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Data collected using numbers
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N or L? The man is 2 m tall.
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Quantitative (N)
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Write a hypothesis: Which brand of soda will people prefer, Sprite or Sierra Mist?
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If people are choosing their favorite soda, then they will choose Sierra Mist, because the commercials say it has a refreshing taste. (Answers may vary)
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What measurement tool? mass
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triple beam balance, scale
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What measurement tool? length
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meter stick, ruler
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Write a hypothesis: Which color of light do plants germinate the most in: White, Green, Red, Dark
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If seeds are germinated in the dark, then they will germinate more, because seeds germinate under the soil where it is dark. (Answers may vary)
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What measurement tool? temperature
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thermometer
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What measurement tool? capacity (volume of a liquid)
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triple beam balance
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Write a hypothesis: How does listening to music while studying affect a students performance on a test?
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If students listen to music, then they will perform better, because the students will study longer if they listen to music they enjoy. (Answers may vary)
