Transcript The World of Physical Science Ch1 ANSWERS

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)
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.
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.
pg 14 #1-3
2. Give three examples of technology
from your everyday life. Ex: car
engines, CD/MP3 players, airconditioning units, spoons,
doorknobs, etc.
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.
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.
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.
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? cm3
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)