Vocab
Graph
Graph Relationships
Controls
Misc.
100
What is a variable?
Anything that you can change in an experiment that might affect the outcome.
100
What type of graph shows the outcome of a series of experiments when a variables is changed incrementally?
Two-Coordinate Graph
100
What is the relationship of this graph?
As the time increases, so does the distance.
100
Why is important to make sure that all variables are being controlled except for one?
If you do not control all but one variable then you will not know which one is impacting the results.
100
Where are the independent and dependent variables graphed?
IV= X-axis
DV= Y=axis
200
What is the basic procedure used in a controlled experiment before changing any of the variables?
Standard
200
What is the independent variable for this graph?
Capacity of the boat.
200
What is the relationship of this graph?
As the days increase the acorns decrease.
200
Some students wanted to test how the amount of soil would impact the height of the plant. They put different amounts of soil in three different pots. In those pots they placed 6 sunflower seeds, 4 rose seeds, and 3 tulip seeds. They concluded that the more soil you give a plant the higher it will grow. How can this experiment be improved?
Test same plant. Same amount of seeds. Multiple trials. Make sure each plant gets the same resources.
200
Which variable is found out by doing the experiment?
Dependent
300
What is a controlled experiment?
An experiment in which all of the variables are controlled except the one being tested.
300
Number of passengers
300
Which of these graphs would show the relationship that the more sunlight you give a plant the higher it grows?
The first one.
300
A teacher wants to know which fruit would make the students study more: apples or oranges. The teacher sets up an investigation. During science class, the teacher gave each student one apple and recorded how much they studied. After writing class, the teacher gave each student one orange and recorded how much they studied. The teacher then analyzed the results and formed conclusions based on the data. How can this experiment be improved?
Make sure to test at the same point of the day. Know what other food was eaten that could impact the results.
300
What is the independent variable?
The variable that is being changed or tested.
400
What does it mean to control a variable?
Keep it constant.
400
42-43mL
400
Which of these graphs shows the relationship that the more time you spend on your phone the less sleep you get?
The second one.
400
A group of students wanted to test out which phone got the best reception. One student had their I-phone out next to the router. The next student had their Samsung out in the basement. The next student had their Blackberry out on an airplane. The results were that the I-phone had the best wifi connection. Do you agree? Why?
No. They need to test the phones out in the same place.
400
Who coined the phrase Eureka?
Archimedes
500
What three things can be done in an experiment to improve the accuracy?
Control all variables except the one being tested. Multiple trials. Use smaller units of measurement.
500
16-18
500
The temperature in a room with no windows is set to 72 degrees. What would the relationship on the graph be if you checked the room every hour to see what the temp was?
The third graph.
500
Which two pendulums could be used to find out if the variable of length impacts the number of swings? Why?
A. 15 cm, fishing line, washer. 15 cm, string, washer.
B. 15 cm, fishing line, washer. 45 cm, fishing line, washer.
C. 45 cm, string
B. because they are different sizes, but the rest of the materials are the same.
500
Who invented the first pendulum?
Galileo