# Unit 1 Test Review-Unit 1 Summary p. 44

1. As scientists make observations and conduct experiments, their answers to some questions may change.  Changes in understanding can lead to changes in scientific knowledge.  Over time, ideas and explanations change based on new observations and experimental results.

2. Tables help to organize data in an orderly way.  Graphs are helpful in analyzing data for patterns and trends.  Graphs also show data in a visual way.

3. Science is the study of the natural world.  Scientists ask questions, make observations, and gather empirical evidence to better understand the natural world in a systematic way.

# Unit 1 Test Review-Lesson 3 Review pg. 41

1. graph

2. model

3. A model is a physical or mathematical representation of a system, process or other thing.

4. Scientists use models to represent things that are too big, too small, or too complicated to observe or to use in an experiment.

5. Scientists use data tables to organize and record data.

6. A graph that is used to show how a set of data is divided into parts.

7. No, you would need a graph that shows two variables, such as a line graph.

8. The model is similar to the real object in terms of structure and the relative sizes of different parts of the building.  The model also shows the location of the windows.

9. This model shows what features this building would have and the relationship of these feature to one another without having to build the actual building.

10. A model might be too simple to explain how complex a system or process really is, so it wouldn’t actually help people understand what it represents.

# Unit 1 Test Review-Lesson 2 Review pg. 31

1. hypothesis

2. independent variable

3. data

4. It must be testable.

5. Experiments are most often performed in laboratories because it allows scientists to control variables more than in field investigations.

6. Repetition occurs when a scientist repeats her own experiment.  Replication occurs when others follow the scientists procedure to perform the experiment.

7. Defining a problem, forming a hypothesis, making predictions, planning an investigation collecting data, organizing dat, identifying variables, interpreting data, analyzing data, drawing conclusions.

8. The animal in the fossil had wings, a long tail and four legs.

9. The fossilized organism dates back to the time of the dinosaurs.

10. Test the hypothesis by experimenting with the rock that is found around the fossil and then collect the data about the components of the rock.

# Unit 1 Test Review-Lesson 1 Review pg. 15

1. theory

2. empirical evidence

3. law

4. Biology, Geology and Physical Science

5.  We commonly use theories when we mean a hunch or a guess, but in science that is not true.  In science theories are well tested and based on data from those experiments.

6. Laws are proven factual descriptions of what we see happening in the world.  Theories are well tested fact based explanations for how things happen in the world, but they have not been proven.

7. In the field and in the lab.

8. In a laboratory, scientists do experiments and control conditions.

9. It is a law because it is a statement that describes what is happening in the world and it is not an explanation about the reasons it is happening.

10. Scientific knowledge is often changed and modified as new evidence is found or new explanations are put forward for old evidence.

11. They hold these meetings and publish the discussion so scientists can debate scientific knowledge.  Scientists know debate is important for scientific knowledge to advance.

# Unit 1-Nature of Science Essential Questions

Updated on 9/6/2017

All 4 Questions Summary Notes:

• What are the benefits and limitations of using scientific models?
• How do scientists conduct a scientific experiment using all the parts of the scientific method?
• How are qualitative and quantitative data alike and different?
• How do the Mythbusters use empirical evidence and creative thinking in their science experiments?

Unit-1-Nature-of-Science-Essential-Questions-