Independent/Dependent Variables
Graphing
Qualitative vs. Quantitative Observations
Steps of the Scientific Method I
Random Questions
100
Read the hypothesis and identify the independent variable and the dependent variable. If a plant receives fertilizer, then it will grow to be bigger than a plant that does not receive fertilizer.
Independent Variable: The amount of fertilizer the plant receives. Dependent Variable: How big the plant grows.
100
What does the title of a scientific graph always need to include?
The title of a scientific graph always needs to include the independent variable and the dependent variable.
100
When observing the time it takes the sun to set Randy states that it took the sun 2 hours and 25 minutes. Is this a qualitative or quantitative observation?
This would be a quantitative observation.
100
The results of the experiment showed that if I added weight to the tip of my plane that it flew 3 more meters down the hallway. What part of the scientific method is this?
This would be a conclusion.
100
Does the amount of cheese put on a mousetrap attract more mice? What part of the scientific method is this?
Question
200
What is an independent variable?
An independent variable is the factor in an experiment that can be changed by the scientist.
200
Which variable goes on the x - axis (horizontal)? Which variable goes on the y - axis (vertical)?
The independent variable goes on the x - axis. The dependent variable goes on the y - axis.
200
Sara observes the birds at the zoo. She states that one of the birds has a very ugly beak. Is this an appropriate qualitative observation? Why or Why not?
This is not an appropriate qualitative observation because a qualitative observation has to be a fact. Stating that something is ugly is an opinion, it can not be proven true.
200
Jamie will take 4 different types of bread and leave them out on the counter. She will observe the cheese and see how long it takes each of them to develop mold. What part of the scientific method is this?
Experiment
200
Why is it important for an experiment to be able to be repeated?
It is important for an experiment to be repeated because it would cut down on the amount of mistakes that might have been made by one person.
300
What is a dependent variable?
A dependent variable is the factor in an experiment that depends on the changes that were made.
300
What does each label on the graph need to include?
Each label on the graph needs to include a unit of measurement.
300
What is a qualitative observation?
A qualitative observation describes the quality of something mainly using adjectives. It uses the 5 senses, and it has to be a fact.
300
If I use more soap to wash my dog, then he will stay clean longer. What part of the scientific method is this?
Hypothesis
300
When measuring the amount of liquid in a graduated cylinder, you must read the measurement from the bottom of the meniscus. What is the meniscus?
The meniscus is the curve that is created when the liquid is in the graduated cylinder. In order to get an accurate measurement, you must read from the bottom of the curve.
400
Read the experiment below and identify the independent and dependent variables. A student was walking home from school and noticed that the leaves on the trees were changing colors. She wondered if the temperature affected the changing color of the leaves on the trees.
The independent variable is the temperature. The dependent variable is whether or not the leaves change color.
400
True or False. A graph does not need to use equal intervals or equal spacing on the x - axis and y - axis.
False.
400
What is a quantitative observation?
A quantitative observation is a measurement of something. It will always involve a number and it must be precise.
400
When Joseph came home from school he noticed that the grass in the lawn was extremely shorter than when he left for school. He came to the conclusion that his dad must have mowed the lawn during the day. Is this an example of an observation, an inference, or a hypothesis?
Inference
400
What are the 8 steps of the scientific method? In order!
Observe, Question, Research, Hypothesis, Test, Analyze the data, Conclude the data, Publish the data.
500
Identify the independent and dependent variables in the experiment below. A student uses three different types of water to make ice cubes (tap water, distilled water, sparkling water). He wonders which one will melt the fastest.
The independent variable is the type of water used to make the ice cube. The dependent variable is the time it takes to melt.
500
Make a title for a graph using the following information. If I increase the temperature of the water, then the salt will dissolve faster than if I lowered the temperature of the water.
The effect of water temperature on the time it takes salt to dissolve.
500
Give me 2 qualitative and 2 quantitative observations.
Answers will vary.
500
What is the mnemonic device we used to learn the 8 steps of the scientific method?
Only Quick Rick Has Totally Awesome Cheese Pizza
500
What step of the scientific method would it be when you write the results down and then have it put in a scientific article for other people to read and recreate the experiment?
Publish the data.