Question

(each question, 4 points)
fill in the blanks using words from the box below.
science prediction experiment
variable hypothesis empirical evidence
evaluate descriptive independent variable
1)______ is the study of the natural world.

1. something that is changed in an experiment is a(n)

______.

1. a(n)______ is a test to try to find an answer to a question.
2. a(n)______ is your guess about what could happen, based on

an observation.

1. to______ is to look at something carefully to judge how good

or valuable it is.

1. a(n)______ is a possible explanation or guess for what might

happen during an experiment.

1. a(n)______ investigation describes something that cannot be

experimented on.

1. evidence that can be measured or observed directly is called

______.
choose the best answers.
9)______ what is an advantage of using models?
a. they can be used to represent things that are too large or too small to
observe directly.
b. they are always more accurate than real - life objects.
c. they are easy to make and do not require any special materials.
d. they can be expensive to make.

Explanation:

1. Science is the study of the natural world.
2. In an experiment, the variable that is changed is the independent variable.
3. An experiment is a test to try to find an answer to a question.
4. A prediction is a guess about what could happen based on an observation.
5. To evaluate means to look at something carefully to judge its quality or value.
6. A hypothesis is a possible explanation or guess for what might happen during an experiment.
7. A descriptive investigation describes something that cannot be experimented on.
8. Empirical evidence is evidence that can be measured or observed directly.
9. Models can represent things that are too large or too small to observe directly. Option B is incorrect as models are not always more accurate. Option C is wrong as they may require special materials. Option D is a disadvantage, not an advantage.

Answer:

1. Science
2. independent variable
3. experiment
4. prediction
5. evaluate
6. hypothesis
7. descriptive
8. empirical evidence
9. A. They can be used to represent things that are too large or too small to observe directly.