1 Nature of Science Test Study Game
2 Rules This in an individual game, yet you are earning points as a group. There is NO verbal or non-verbal communication allowed. Teams, feel free to watch the room and call out other teams for communicating! EVERYONE has a piece of paper out writing answers so that you can circle problem questions to be sure to review AND notes based on what I may discuss with you! The winning team earns extra credit on the test!
3 5 Point Questions (1 tally)
4 # 1 When would I use a triple beam balance?*To find which property of matter…. Jordan was here
5 # 1 answer When would I use a triple beam balance?*To find which property of matter…. MASS! ….the amount of matter in an object. I would use GRAMS as my unit. For example, the clay we measured had a mass of g. Jordan was here
6 # 2 When writing a conclusion to an experiment, you should:Summarize what occurred in the experiment. Address your hypothesis and redraw your graph. Restate your hypothesis, address if it was supported or not. Restate your hypothesis, address if it was supported or not, included data for all trials (or an average), and state any concerns, misconceptions, errors.
7 # 2 answer When writing a conclusion to an experiment, you should:Summarize what occurred in the experiment. Address your hypothesis and redraw your graph. Restate your hypothesis, address if it was supported or not. **Restate your hypothesis, address if it was supported or not, included data for all trials (or an average), and state any concerns, misconceptions, errors. *Should also include purpose and future experiments!
8 # 3 If I repeat my experiment over and over and get similar results, this is called: ___________________
9 # 3 Answer If I repeat my experiment over and over and get similar results, this is called: Repetition
10 # 4 Define Test Variable The variable in an experiment that is changed intentionally. The variable in an experiment that changes indirectly (not on purpose) The variable in an experiment that stays the same. The variable used to compare your results to.
11 # 4 Answer Define Test Variable**The variable in an experiment that is changed intentionally. Test V = Independent V. The variable in an experiment that changes indirectly (not on purpose). Outcome V = Dependent V. The variable in an experiment that stays the same. Constants = Controlled Variables The variable used to compare your results to. I made this up…. However the GROUP or portion you do NOT use a test variable in is the control group. **Know the synonyms for all 3 variables!
12 #5 What is the test variable in this experiment?
13 #5 Answer What is the test variable in this experiment? *The type of cleanser – x axis on a bar graph (discrete data)
14 # 6 In order for an experiment to be VALID, how many variables can be tested in an experiment? 1 2 It doesn’t matter as long as you are accurate with your measurements. As many as you need until you get the results you need to support your hypothesis.
15 # 6 Answer In order for an experiment to be VALID, how many variables can be tested in an experiment? **1- For example, if you are trying to see if a plant grows tallest with different amounts of water, you can only change the amount of water….don’t decide to give the plants fertilizer as well! 2 It doesn’t matter as long as you are accurate with your measurements. As many as you need until you get the results you need to support your hypothesis.
16 # 7 In an experiment, the group or portion of the experiment that is used to compare the changes due to variables is called the Constant Controlled Variable Control Group Comparison
17 # 7 Answer In an experiment, the group or portion of the experiment that is used to compare the changes due to variables is called the Constant Controlled Variable **Control Group ***By using a control group, we can be sure that our observationans and results are caused by the Test Variable. Comparison
18 #8 Convert g to kg
19 #8 answer Convert g to kg 114.5 g = kg K H D U D C M
20 #9 On your table, there is a piece of paper with a line on it. Measure it in cm. What is the length of the line? What is that length in mm? What is that length in dm?
21 #9 Answer On your table, there is a piece of paper with a line on it. Measure it in cm. Notice the numbers are all the same, the decimal point is the change. What is the length of the line? 9.7 cm What is that length in mm? 97 mm What is that length in dm? .97 dm
22 #10 What is the Volume of this ring? *A copy is at your table.
23 #10 Answer What is Volume? The amount of space something takes up. What is the Volume of this ring? *A copy is at your table. Before = 64 mL After = 68 mL This ring takes up 4 mL of space (or the volume is 4 mL)
24 #11 What is the mass of this object? *At your table too.
25 #11 Answer What is Mass? The amount of matter in something. OR the amount of “stuff” in something! What is the mass of this object? *At your table too g
26 10 Point Questions
27 #1 Amy wants to buy new tires for her bike. She wants to find out if the size of the wheels will affect how far she can coast on her bike. She is curious to see if the thickness of the tires affects how far she can coast. She decided to compare two brands of tires. She rides to the top of a hill, turns around, and starts down the hill. She stops pedaling at the mailbox in front of the yellow house and begins coast. Once she comes to a stop she marks the road with chalk. She then measures the distance she was able to coast. She does this 5 times with both types of tires. She determines she can coast further with Tire 2, the large/thin tire than she can with Tire 1, the small/thick tire. What can she conclude from this test? a) The size of tire affects how far she can coast b) The thickness of the tire affects how far she can coast c) The size of the tire and the thickness of the tire affects how far she can coast d) It is not possible to conclude from this test if the size of the tire or the thickness of the tire affects how far she can coast
28 #1ans Amy wants to buy new tires for her bike. She wants to find out if the size of the wheels will affect how far she can coast on her bike. She is curious to see if the thickness of the tires affects how far she can coast. She decided to compare two brands of tires. She rides to the top of a hill, turns around, and starts down the hill. She stops pedaling at the mailbox in front of the yellow house and begins coast. Once she comes to a stop she marks the road with chalk. She then measures the distance she was able to coast. She does this 5 times with both types of tires. She determines she can coast further with Tire 2, the large/thin tire than she can with Tire 1, the small/thick tire. What can she conclude from this test? a) The size of tire affects how far she can coast b) The thickness of the tire affects how far she can coast c) The size of the tire and the thickness of the tire affects how far she can coast d) ***It is not possible to conclude from this test if the size of the tire or the thickness of the tire affects how far she can coast INVALID!!!!!! There are TWO test variables!!!!!
29 # 2 Team Magnetism is performing an experiment to see if changing the dropping height of a ping pong ball affects how high it bounces (rebound height). What is their test variable? What is their outcome variable? List ONE constant.
30 # 2 Answer Team Magnetism is performing an experiment to see if changing the dropping height of a ping pong ball affects how high it bounces (rebound height). What is their test variable? *Dropping Height What is their outcome variable? *Rebound Height List ONE constant. *Same ball, same experimenter, same data collector, same dropping force, same floor surface, same environment…really same location in general
31 #3 Here is the Data Table for the experiment in #2How the dropping height of a ping pong ball affects its rebound height. Dropping Height (cm) Rebound Height (cm) Trial 1 Trial 2 Trial 3 Average 30 cm 22 cm 21 cm 20 cm 60 cm 40 cm 43 cm 41 cm 41.3 cm 90 cm 65 cm 67 cm 66 cm If you dropped a ball from 75 cm, around where would you find it’s rebound height? 31 cm C) 71 cm 51 cm D) 61 cm
32 #3 Here is the Data Table for the experiment in #2How the dropping height of a ping pong ball affects its rebound height. Dropping Height (cm) Rebound Height (cm) Trial 1 Trial 2 Trial 3 Average 30 cm 22 cm 21 cm 20 cm 60 cm 40 cm 43 cm 41 cm 41.3 cm 90 cm 65 cm 67 cm 66 cm If you dropped a ball from 75 cm, around where would you find it’s rebound height? 31 cm C) 71 cm 51 cm D) 61 cm
33 #4 Paul performed multiple trials of the same experiment and achieved similar results. He performed a replicable experiment. True or False AND WHY
34 #4 Answer Paul performed multiple trials of the same experiment and achieved similar results. He performed a replicable experiment. True or False* An experiment that is repeatable (by the original experimenter) is a great start, but to make it REPLICABLE, someone ELSE has to perfom Paul’s experiment and get similar results!!!
35 #6 Look at the data below. What is the relationship between the variables? …and what type of graph (include WHY). As __________ what happens to ______________
36 #6 answer Look at the data below. What is the relationship between the variables? …and what type of graph (include WHY). As time increases, the distance traveled also increases. In fact, as time increases by an hour, distance increases constantly by 50 km. **Line graph because there is a change over time- Continuous data.
37 #7 I have an object with a mass of 241.5 g. It has a volume of 350 mL.What is the density of this object? *Think…what is density?
38 #7 Answer I have an object with a mass of 241.5 g.It has a volume of 350 mL. What is the density of this object? Density = Mass ÷ Volume .69 g/mL = g ÷ 350 mL *Think…what is density? The compactness of an object. The amount of STUFF in a given space. Remember, a full suitcase is has much more STUFF inside it, so it is more dense than an empty suitcase!
39 20 Point Questions
40 Rubber band launching ping pong ballsWidth of Rubber band (mm) Avg. distance traveled in cm Thin (2 mm) 75 Medium (4 mm) 94 Thick (6 mm) 113 # 1 A ping pong ball was launched 4 times from 3 different widths of rubber bands. The distance the ball traveled was measured each time. Only the averages of 4 trials are shown. Identify: the Test Variable- the Outcome Variable- The experimenter saw that his hypothesis was supported. What was his hypothesis?
41 Rubber band launching ping pong balls# 1 A ping pong ball was launched 4 times from 3 different widths of rubber bands. The distance the ball traveled was measured each time. Only the averages of 4 trials are shown. Identify: the Test Variable- Width of Rubberband the Outcome Variable- Distance traveled when launched. Rubber band launching ping pong balls Width of Rubber band (mm) Avg. distance traveled in cm Thin (2 mm) 75 Medium (4 mm) 94 Thick (6 mm) 113 The experimenter saw that his hypothesis was supported. What was his hypothesis? Example- If the width of a rubberband that is launching a ping pong ball is increased, then the distance the ball will travel when launched by the rubberband will also increase because the amount of elastic energy is increasing with the width of the rubberband.
42 Thickness of rubberbands vs. launching distance of# 2 Here were the 4 trials that were found in the experiment in #1. Thickness of rubberbands vs. launching distance of ping pong balls Width of Rubber band (mm) Distance traveled when launched (cm) Trial 1 Trial 2 Trial 3 Trial 4 Avg. Thin (2 mm) 72 78 73 77 75 Medium (4 mm) 92 97 *First 62 95 94 Thick (6 mm) 111 112 114 115 113 Why do you think the experimenter had to redo Trial 2 for the medium rubberband?
43 # 2 Here were the 4 trials that were found in the experiment in #1.Thickness of rubberbands vs. launching distance of ping pong balls Width of Rubber band (mm) Distance traveled when launched (cm) Trial 1 Trial 2 Trial 3 Trial 4 Avg. Thin (2 mm) 72 78 73 77 75 Medium (4 mm) 92 97 *First 62 95 94 Thick (6 mm) 111 112 114 115 113 Why did the experimenter had to redo Trial 2 for the medium rubberband? It was an outlier. It would have skewed all of the data. BUT, most importantly, there was a problem with accuracy. A possible reason might be that the experimenter didn’t realize her rubberband was tearing. An error in equipment is an error in the ACCURACY of her experiment. She would actually have to get a new rubberband and redo Trial 1 as well.
44 25 Point Questions FOR THE GROUP
45 Interpret this graph. The experimenter’s hypothesis was “If I increase the amount of time sunflowers are exposed to acid rain, then they will not grow as tall as those receiving fresh water because plants do not grow as tall in acidic environments.” Write a conclusion for this experiment. *Plant A was the control (group).
46 The purpose of this experiment is to show that acid rain will stunt the growth of plants (as opposed to fresh water). My hypothesis, “If I increase the amount of time sunflowers are exposed to acid rain, then they will not grow as tall as those receiving fresh water because plants do not grow as tall in acidic environments” was supported in this experiment because my data shows Plant A, the plant with freshwater, grew to a height of roughly 180 cm. Plant B (given acid rain) grew to only 155 cm. Plant C (given acid rain) grew to only 75 cm. Plants D and E (both given acid rain) did not grow at all. I could improve this experiment though by having more than one plant receive freshwater and doing multiple trials of this experiment. Note: This conclusion includes: The purpose, hypothesis, whether or not the hypothesis was supported, ACTUAL DATA for all plants, and suggestions for improvements. THIS makes a well founded conclusion.