Question

someone check my answers

Answer 1

Question 1. Scientists form _______ hypothesis to answer questions.
accurate
short
mathematical
testable<--- my answer
Question 2. Scientists _______ experiments to make sure the results are meaningful.
perform
repeat<-- my answer
conclude
communicate
Question 3. A good hypothesis
is always true.
is always a guess.<-- my answer
is not simply a guess.
none of the above
Question 4. Two essential parts of a good experiment are
the control group and a single variable.<-- my answer
the control group and the outcome.
two variables.
two control groups.
Question 5. In an experiment, the experimental treatment differs from the control treatment only in the _______ being studied.
experiment
variable<-- my answer
hypothesis
data
Question 6. A sample size should be ________ enough to give an accurate estimate for the whole population.
large<-- my answer
small
strong
heavy
Question 7. A group of individuals or events that have been selected to represent a population is known as a
team.<-- my answer
species.
family.
sample.
Question 8. Models used by scientists include
conceptual models.
variable models.
physical models.
both a and c<--- my answer
Question 9.A conceptual model represents a way of thinking about
relationships.
variables.<--- my answer
data.
positions.
Question 10. To fully understand a complex environmental issue, we really need to consider
economics.
values.
scientific information.
all of the above<--- my answer

Answer 2

I agree with your answer except for Q3,7, and 9. see my comment below

Question 3
it is not simply a guess

a guess is you are going to succeed in your exam. But an hypothesis is you you are going to succeed because I see you studying hard.

In order to be a good hypothesis that can be tested or studied, a hypothesis:
Needs to be logical
Must use precise language
Should be testable with research or experimentation
A hypothesis is usually written in a form where it proposes that if something is done, then something else will occur.

Question 7: sample

Question 9: its about concepts, ideas or positions, the ideas or conceptions can be related or referred to the data or to the variables.
http://en.wikipedia.org/wiki/Conceptual_model

Answer 3

thank you for your time for helping me

Answer 4

For #9 its Relationships.

Answer 5

For #9 its Relationships.