Which of the following statements about the image shown below is NOT an observation?
The inset has 3 legs on the left side c) The insect’s pattern shows its poisonous
The insect has a pattern on its back d) The insect is black, orange, and yellow
The statement “the worm is 2 centimeters long” is a(n)
Observation c) Inference
Theory d) Hypothesis
An inference is
The same as an observation
A logical interpretation of an observation
A statement involving numbers
A way to avoid bias
To be useful in science, a hypothesis must be
Measurable c) testable
Observable d) correct
Which of the following statements about a controlled experiment is true?
All the variable must be kept the same
Only one variable is tested at a time
Everything can be studied by setting up a controlled experiment
Controlled experiments cannot be performed on living things