Energy Transformations and Flow of Energy Within A

ENERGY TRANSFORMATIONS AND FLOW OF ENERGY WITHIN A

SYSTEM

UNIT PLAN/DAILY PLAN

PHYSICAL SCIENCE

SPS7. Students will relate transformations and flow of energy within a system.

a. Identify energy transformations within a system (e.g. lighting of a match).

ACTIVATING STRATEGY

EXAMINE THE FLAHSLIGHT ON THE DEMONSTRATION DESK. DESCRIBE THE TYPE OF ENERGY THAT IS PRODUCED AND HOW THE ENERGY IS PRODUCED.

TYPE OF ENERGY PRODUCED.______

WHERE DOES THE ENERGY COME FROM?______

______IS THE ABILITY TO DO WORK.

______IS A TRANSFER OF ENERGY. Remember: What is the formula? ______

SIX FORMS OF ENERGY Page 450-452

1. MECHANICAL

2. THERMAL

3. CHEMICAL

4. SOUND

5 .ELECTRICAL

6. ELECTROMAGNETIC

7. NUCLEAR

b. Investigate molecular motion as it relates to thermal energy changes in terms of conduction, convection, and radiation.

Page 474-481

What is heat? ______

What is temperature? ______

What is thermal energy? ______

c. Determine the heat capacity of a substance using mass, specific heat, and temperature.

Define specific heat:

The lower a material’s ______heat, the more its ______rises when a given amount of energy is ______by a given mass.

Specific Heat equation: Q= m X c X T

What does Q mean?

What does m mean?

What does c mean?

What does T mean?

Using the specific heat chart on page 476 answer questions 1-4 on pg. 477 (Math Practice). Show your work on your own paper.

d. Explain the flow of energy in phase changes through the use of a phase diagram

Draw a phase change diagram: pg 85.

Identify endothermic changes in red and exothermic in blue: pg 86.

Draw a phase change graph of water (remember the temperature does not change during a phase change) pg 85.