Experiments and Zebrafish

The variable the is changed on purpose is the​ (a)   , for our caffeine experiment this was ​ (b)  

• Independent variable
• the amount of caffeine
• Controlled Variable
• Dependent Variable
• the yolk size
• the heart rate

Tags

NGSS.MS-LS1-5

The variable that is measured to test our hypothesis is the​ (a)   , for our caffeine experiment one example was ​ (b)  

• Dependent variable
• the heart rate
• Controlled Variable
• Independent Variable
• the temperature
• the number of fish

The variable that is kept the same to make sure it is a fair test is a ​​ (a)   , for our caffeine experiment one example was ​ (b)  

• controlled variable
• the temperature
• Independent variable
• Dependent variable
• the yolk size
• the heart rate
• the amount of caffeine

Tags

Confounding Var

The vertical (up/down) axis of a graph is called the

(a)   and the horizontal (bottom) axis is called the ​ (b)  

• y-axis
• x-axis
• slope
• line of best fit
• scale

Tags

y axis

To find the average in a set of data, add up all the samples and divide by...

• Half

• The smallest number

• The biggest number

• The number of samples you took

Tags

Average

In any experiment, the independent variable ______________.

• remains the same to not mess up the experiment

• is purposely changed to test the question

• is measured by the scientist during the experiment

Tags

Indep Var

Your research question needs to be ​ (a)   and (b)  

• specific
• testable
• long
• general

Tags

NGSS.HS-LS1-3

NGSS.HS-LS3-1

What should you look for when analyzing your data?

• trends and patterns

• graphs and charts

• conclusion statement

• procedural steps

Tags

NGSS.MS-ETS1-3

NGSS.MS-LS2-1

NGSS.MS-PS3-1

What is important to include in the conclusion of the experiment's results?

• the data and evidence you collected

• if the results matched your hypothesis

• your analysis of the data (what did the results mean?)

• All of these things are needed

Tags

NGSS.HS-LS1-6

NGSS.HS-PS1-2

NGSS.HS-PS3-4

In experiments we need multiple trials to avoid a biased answer.

How many trails or repetitions should we usually do?

(Hint: How many did we do for the zebrafish?)

• 3 to 5 trials or samples

• No trials are required

• 1 trial or sample

• 100 trials or samples

Tags

NGSS.MS-ETS1-4