• Save
8th Grade Chapter 5 Lesson 1
Upcoming SlideShare
Loading in...5
×
 

8th Grade Chapter 5 Lesson 1

on

  • 3,057 views

For Student Use Only

For Student Use Only

Statistics

Views

Total Views
3,057
Views on SlideShare
3,053
Embed Views
4

Actions

Likes
3
Downloads
0
Comments
0

2 Embeds 4

http://www.slideshare.net 3
http://www.guru-app.com 1

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

    8th Grade Chapter 5 Lesson 1 8th Grade Chapter 5 Lesson 1 Presentation Transcript

    • Pgs. 176-185 For Student Use Only 8 th Grade Chapter 5 Lesson 1
    • Question 1 What is thermal energy?
      • A. Energy of internal heat
      • C. Internal energy due to the random motions of its individual molecules
      • B. Energy of individual molecules within an object that are moving randomly
      • D. It is not mechanical energy of the whole obejct
    • Key
      • 1) A,B,C,D
    • Heat is everywhere
      • Student generated ideas:
      • Explain which objects would have thermal energy?
    • Thermal Energy is everywhere
      • Thermal Energy
        • Thermal energy can be transferred from one object to another
        • Heat= the transfer of thermal energy from an object of higher temperature to an object of lower temperature
        • What heat does is transfer energy
      http://www.physchem.co.za/Heat/Graphics/Heat28.gif
    • Heat is everywhere
      • Student generated ideas:
      • Explain which objects would move heat more quickly?
    • Thermal Energy is everywhere
      • Thermal Energy
      • Heat flows from higher energy to lower energy
        • It flows no other way!!
      • Heat does not exist unless thermal energy is being transferred.
      • Temperature is the measure of kinetic energy (the more energy the faster the motion)
      http://www.physchem.co.za/Heat/Graphics/Heat28.gif
    • Heat is everywhere
      • Student generated ideas:
      • Explain which properties of the objects affect thermal energy.
    • Thermal Energy is everywhere
      • Factors that affect thermal energy
      • Temperature: higher temperature equal higher energy
      • Mass: the amount of matter in an object, more matter more warmth
      • Higher Heat capacity: some objects change more quickly in temperature than other objects
      http://www.chem.uiuc.edu/webFunChem/SpecificHeat/Heatplastic.gif
    • Thermal Energy is everywhere
      • Factors that affect thermal energy
      • Type of substance: different substances have different heat
      • Specific Heat: is the amount of heat that added to a certain mass of a particular substance in order to raise its temperature by 1 degree
      http://www.chem.uiuc.edu/webFunChem/SpecificHeat/Heatplastic.gif
    • Heat is everywhere
      • Student generated ideas:
      • Explain which temperature scale you would use for what object.
    • Thermal Energy is everywhere
      • Temperature Scales:
      • Temperature is measured with a thermometer
        • Fahrenheit Scale- based on 0 which is ice, water, and salt
        • Celsius Scale- water freezes at 0 and boils at 100
        • Kelvin Scale- absolute scale- used to describe absolute zero where molecules stop moving
      http://www.visionlearning.com/library/modules/mid48/Image/VLObject-318-021121021101.gif
    • Calories are everywhere
      • Student generated ideas:
      • Explain which objects would have higher calories and why you choose those objects.
      • Heat energy also does work
    • Thermal Energy is everywhere
      • Calories:
      • Calorie is used to measure thermal energy and heat.
        • Food labels are in Kilocalories (one thousand calories)
      • BTU: British Thermal Unit- when one pound of water undergoes one change of 1 degree F
      • Calorimeter: this device measures thermal energy in a material
      http://www.visionlearning.com/library/modules/mid48/Image/VLObject-318-021121021101.gif
    • Heat energy also does work
      • Student generated ideas:
      • Explain which objects would have energy for doing work.