Independent Variables
How does phone use before bedtime affect sleep?
Identify the independent variable.
The amount of phone use before bed.
Ms. Keeler wants to see how different types of music affected students’ pulse rates. She played different types of music: heavy metal, rap, R & B, pop, country, and classical music. Identify the dependent variable?
The students' pulse rates
My Very Educated Mother Just Served Us Noodles.
What is this phrase used for?
Remembering the planets in order, closest from the Sun.
Mercury, Venus, Earth, Mars, Jupiter, Uranus, Neptune
Is this a good title?
How well do different plant species tolerate salt water?
Explain.
It is good because it is a question so it has a question mark at the end of the sentence but...
It is not capitalized. All titles need to be capitalized.
* Make sure it also has to do with the topic.
What is the capital of Illinois?
Springfield
Bob was trying to figure out how fast it took James to react to different sounds. Identify the independent variable.
The different sounds
Different rose bushes are grown in a greenhouse for two months. The number of flowers on each bush is counted at the end of an experiment. Identify the dependent variable.
The number of flowers on each bush.
What is an independent and dependent variable?
An independent variable is the 1 thing being changed. It is what that person is intentionally changing.
The dependent variable is what we are trying to figure out/measuring.
What is included in a hypothesis?
What you think is going to happen, based on an educated guess and why.
How many windows can you see in Ms. Katz's screen?
2
Lisa is working on a science project. Her task is to answer the question: "Does Rogooti (which is a commercial hair product) affect the speed of hair growth".
Identify the independent variable.
Product on hair
What is the effect of diet and regular soda on blood sugar levels?
Identify the dependent variable.
Blood sugar levels
What does COVID-19 stand for?
Co - Corona
VI - Virus
D - Disease
19 - Used to be called 2019 Novel Coronavirus
What are at least 3 things you would find in a data table.
The title, labels, at least 3 trials
How many states start with an "A"?
4
A shopping mall wanted to determine whether the more expensive “Tough Stuff” floor wax was better than the cheaper “Steel Seal” floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. After 3 weeks, the number of scratches in each of the test sections was counted to observe the wax’s effectiveness.
The floor wax
Mr. Smith wanted to see if the color of light shined on a plant had an effect on the number of leaves it has. He gathered a 2 groups of the same species of plants, gave them the same amount of water, and did the test for the same amount of time. On one group of plants he used white light. On the second group he changed the light color to red.
The number of leaves
What are the 3 main categories of science?
Earth Science, Life Science, and Physical Science
When do a scientific method experiment, what are the steps to take to complete it, in order.
Title, Purpose, Hypothesis, Variables, Materials, Procedure, Data/Results, Conclusion, (Bibliographies)
What are the three branches of government?
Legislative, Executive, and Judicial
SpongeBob loves to garden and wants to grow lots of pink flowers for his pal Sandy. He bought a special Flower Power fertilizer to see if it will help plants produce more flowers. He plants two plants of the same size in separate containers with the same amount of potting soil. He places one plant in a sunny window and waters it every day with fertilized water. He places the other plant on a shelf in a closet and waters it with plain water every other day.
What is the independent variable?
More than 1 thing changed. They were in different locations and one was watered every day and the other was every other day.
Dependent Variable - The color of leaves.
Constants - The same type of plants, same location of room, same amount and type of water, same soil...
What are the names of the variables in an experiment
Independent Variable
Dependent Variable
Constant Variables
Control Variable
What is included in a conclusion?
1. If your hypothesis is right or wrong and why.
2. Explain your data in writing.
3. What you would do differently if you did the same experiment again.
What 3 cities has Ms. Katz lived in?
Columbus, Cincinnati, Chicago