1. The World of Physical Science Chapter 1 Section Reviews (pg 10 #1-3; pg 14 #1-3; pg 19 #1-3; pg 23 #1-3; pg 27 1-3)

2. pg 10 #1-3 1.What is physical science all about? Physical science is the study of matter and energy. 2.List three things you do everyday that use your experience with physical science. Ex: turning on the light, making popcorn in a microwave, getting shock from touching a doorknob, washing dishes, etc.

3. pg 14 #1-3 1.How do scientists and engineers use the scientific method? Scientists use the scientific method to answer questions and solve problems. Engineers can use the scientifice method to create new technology.

4. pg 14 #1-3 2.Give three examples of technology from your everyday life. Ex: car engines, CD/MP3 players, air- conditioning units, spoons, doorknobs, etc.

5. pg 19 #1-3 1.Name the steps that can be used in the scientific method. Acceptable answers are from your notes handout or the steps on page 11. 2.How is a theory different from a hypothesis? Hypothesis is a possible answer to a question that can be tested to determine its validity. Theory is a broader explanation for why something happens.

6. pg 23 #1-3 1.What is the purpose of a model? The purpose of a model is to represent concepts or characteristics of objects that are difficult to see or hard to explain 2.Give three example of models that you see everyday. Ex: bus maps, stuffed animal, sheet music, etc.

7. pg 27 1-3 1.Why is SI important? The SI unit is based on the number 10. It helps scientist to communicate quantitive information more accurately.

8. pg 27 1-3 2.Which SI unit would you use to express the height of your desk? Meters or centimeters. Which SI unit would you use to express the volume of this textbook? cm 3 3.How is area different from volume? Area, the measure of an object’s surface (L x W). Volume, the measure of how much space an object takes up. (L x W x H)