CER
Experimental Design
Vocabulary
Characteristics of Life (1)
Characteristics of Life (2)
100
What does CER stand for?
Claim, Evidence, Reasoning
100
What is an independent variable?
Variable that is changed by the scientist
100
What is biology?
The study of life
100
This is the smallest unit of life that carries out all the functions of life.
A cell
100
Frog eggs are fertilized in the water. This is an example of which characteristic of life?
Reproduction
200
Air is matter. We found that the weight of the ball increased each time we pumped more air into it. This shows that air has weight, one of the characteristics of matter.
Which part of this paragraph is the claim?
Sentence 1 = Air is matter.
200
What is a dependent variable?
Variable that is affected by the independent (changed) variable.
Variable that changes as a result of the independent.
200
What is an extremophile?
Organism that can survive in extreme environments
200
The universal genetic code that gets copied and passed on from parents to offspring.
DNA
200
When a jackrabbit becomes too warm, it increases blood flow to its large ears, which in turn cools the entire body. This is an example of which characteristic of life?
Able to maintain homeostasis
300
Air is matter. We found that the weight of the ball increased each time we pumped more air into it. This shows that air has weight, one of the characteristics of matter.
Which part of this paragraph is the evidence?
Sentence 2= We found that the weight of the ball increased each time we pumped more air into it.
300
What is a controlled variable?
Variable that is kept the same in an experiment
300
What does "adapt" mean?
To change/adjust to your environment
300
A tadpole growing back legs as it develops into a frog is an example of which characteristic of life?
Grow & Develop
300
Fossils provide evidence that allow us to link organisms back to common ancestors. This is an example of which characteristic of life?
Able to adapt & evolve
400
Air is matter. We found that the weight of the ball increased each time we pumped more air into it. This shows that air has weight, one of the characteristics of matter.
Which part of this paragraph is the reasoning?
Sentence 3= This shows that air has weight, one of the characteristics of matter.
400
Identify the dependent variable on this graph.
Words Typed (on the y axis)
400
What is homeostasis?
A state of balance within the body, maintaining a stable equilibrium
400
The face of a sunflower following the sun across the sky throughout the day is an example of which characteristic of life?
Respond to stimuli
400
People sneeze when a foreign particle, like dust, enters the nasal cavity. The sneeze ejects the particle from our nose. This is an example of which characteristic of life?
Respond to stimuli
500
Claim = extremophiles could survive on mars.
Write a piece of evidence that would support this claim.
Answers will vary: they can survive in hot temps, cold temps, without oxygen, in high acidity, etc.
500
Jeremy wants to see if the number of study hours he studies impacts his test grades. He studies for 1 hour for his first science test, 2 hours for his second science test, and 3 hours for his third science test. His science grade improves each time! What is the independent variable in this experiment?
Amount of time spend studying
500
What is a stimulus?
A thing or event that causes your body to react
500
Metabolism is an example of which characteristic of life?
Obtain and use energy
Metabolism: An organisms ability to break down or build up materials that it uses for energy.
500
Plants are autotrophs, which mean they can make their own food through photosynthesis. This is an example of which characteristic of life?
Obtain and use energy