I/D Variables
The thing a scientist keeps the same in an experiment so it's fair/even
Constant variable
What does Evidence mean?
All scientific data that supports your claim
Peanut butter is a terrific snack.
Claim
Through research and data, scientists have found that Earth's temperature has been
Increasing
a variable that does not depend on another
independent variable
Used for comparison, does not receive independent variable/"treatment".
Control Group
What does C represent in C-E-R?
Claim
According to the American Health Association, peanut butter is a great source of protein.
Evidence
As water heats up, the molecules do what?
expand
a variable that depends on another, responding variable
dependent
Ms. Zinn is training to run a marathon at the end of the month. The more time she has spent training, the longer the distance she is able to cover during one run.
t = the amount of time Jackie has spent training
d = the distance Jackie is able to cover during one run
What is the variable (letter) that represents the independent variable?
T
"Plants need sunlight, water and carbon dioxide to make food."
Is this a claim, evidence or reasoning?
Reasoning
Air is matter. We found that the weight of the ball increases by .5lbs each time we pumped more air into it. This shows that air has weight, one of the characteristics of matter.
Which sentence is the claim?
Air is matter.
The impact on the planet due to global warming is called...
Climate change
DeAnthony is going to hang up clean shirts in the closet. The number of empty hangers he needs will depend on how many clean shirts there are.
h = the number of empty hangers
s = the number of clean shirts
What is the variable (letter) that represents the dependent variable?
H
PLAYMatchGravitytMs. Zinn is training to run a marathon at the end of the month. The more time she has spent training, the longer the distance she is able to cover during one run.
t = the amount of time Jackie has spent training
d = the distance Jackie is able to cover during one run
What is the variable (letter) that represents the independent variable?aMs. Wittrock is making fresh orange juice. The amount of juice she can make depends on how many oranges she has.
a = the amount of juice Ms. Wittrock can make
t = the number of oranges Ms. Wittrock has
What is the variable (letter) that represents the dependent variable?
A
"Material A is a better conductor of heat. It gained heat faster than Material B. Good conductors of heat gains heat quickly."
Which of these statement is an Evidence?
It gained heat faster than Material B.
Most students participate in extracurricular activities and do not have time for community service.
Reasoning
Name the greenhouse gas most often associated with a rise in temperature on Earth?
CO2 or Methane
Lani baked a pan of brownies for a potluck. The number of squares she cuts the brownies into will depend on the number of people attending the potluck.
s = the number of squares Lani cuts the brownies into
p = the number of people attending the potluck
What is the variable (letter) that represents the independent variable?
P
Ms. Zinn is training to run a marathon at the end of the month. The more time she has spent training, the longer the distance she is able to cover during one run.
t = the amount of time Jackie has spent training
d = the distance Jackie is able to cover during one run
What is the variable (letter) that represents the dependent variable?
D
Cell X is from a plant cell. It has chloroplasts. Chloroplasts are found only in plants as it allows plants to make its own food.
Which one of these statement is a Reasoning?
Chloroplasts are found only in plants as it allows plants to make its own food.
ItWhat is the purpose of evidence?
It supports the claim
Which human activity contributes the MOST carbon dioxide to the atmosphere?
Burning Fossil Fuels
dMs. Zinn is training to run a marathon at the end of the month. The more time she has spent training, the longer the distance she is able to cover during one run.
t = the amount of time Jackie has spent training
d = the distance Jackie is able to cover during one run
What is the variable (letter) that represents the dependent variable?tMs. Wittrock is making fresh orange juice. The amount of juice she can make depends on how many oranges she has.
a = the amount of juice Ms. Wittrock can make
t = the number of oranges Ms. Wittrock has
What is the variable (letter) that represents the independent variable?
T