Page 17 - Science Course 1 (Book 1)

Mo.1-L1 : Key Concept Check
Directions: On the line before each statement, write T if the statement is true or F if the statement is false. If
the statement is false, change the underlined word(s) to make it true. Write your changes on the lines provided.
1. A hypothesis is a possible explanation about an observation that can be tested by scientific
investigations.

2. When a hypothesis or a group of hypotheses has been tested over and over and has not been
supported by scientific investigations, the hypothesis can become a scientific theory.

3. A scientific theory is an explanation of observations or events that is based on knowledge gained
from many observations and investigations.

4. Scientists hardly question scientific theories and test them for validity.

5. A scientific theory generally is accepted as false until it is proved.

6. The theory of plate tectonics explains how Earth’s core moves and why earthquakes and
volcanoes occur.

7. A scientific law is the same as a scientific theory.

8. A scientific law explains that something will happen under certain circumstances.

9. A scientific law only states that an event occurs.

Mo.1-L1 : Lesson Review Quiz (Matching)

Directions: On the line before each definition, write the letter of the term that matches it correctly.
Not all terms are used.
1. a possible explanation of an observation that can be tested by scientific A. law
investigations B. observation
2. the act of using one or more of your senses to gather information and C. inference
recording what occurs D. opinion
E. hypothesis
3. a statement about what will happen next in a sequence of events F. prediction

4. a logical explanation of an observation that is drawn from prior knowledge or experience
5. a statement that cannot be proved true or false

Mo.1-L1 : Lesson Review Quiz (Multiple Choices)
Directions: On the line before each question or statement, write the letter of the correct answer.
6. A scientist who works in the field of biology would most likely study
a. forces.
b. animals.
c. volcanoes.
7. An explanation based on many observations and investigations is a
a. scientific law.
b. scientific theory.
c. scientific hypothesis.
8. Which step of scientific inquiry would most likely occur first during an investigation?
a. asking a question
b. testing a hypothesis
c. communicating results
9. A rule that describes a pattern in nature is a
a. scientific law.
b. scientific theory.
c. scientific investigation.
10. Which of these is NOT a fact?
a. an observation
b. a measurement
10 c. a personal view