What Happens When Air Rises

Convection Activities
LESSON PLANS created BY: Ken Kakasuleff Frankton Simple School 405 Sigler Street Frankton, IN 46044 Eastward-postal service: kaky@iquest.net

Subject Area: PHYSICAL Scientific discipline

Grade Level: 4-half-dozen

National Standards

CONTENT STANDARD B: As a upshot of their activities in grades v-8, all students should develop an understanding of
- Backdrop and changes of properties in thing
  - A substance has feature properties, such every bit density, a boiling point, and solubility, all of which are independent of the amount of the sample. A mixture of substances often can be separated into the original substances using ane or more of the characteristic properties.
- Motions and forces
- Transfer of energy
  - Free energy is a belongings of many substances and is associated with heat, calorie-free, electricity, mechanical move, audio, nuclei, and the nature of a chemical. Energy is transferred in many ways.

Objectives

To demonstrate that heated air expands
To demonstrate that warm air rises because it it less dumbo

Estimated Time

2 - 3 class periods

Outcomes

Students should demonstrate an understanding of the density of air every bit related to temperature
Students should be able to demonstrate the lifting force of heated air

Resources

Internet connectedness
Various materials equally listed in each activeness

Assessment

Students will be able to demonstrate knowledge of the bones principles listed in the outcomes in a written exercise

Key Questions

one. What happens when air is heated or cooled?
2. How does the temperature of air bear upon air density?

Heating of the globe, which in plough heats the temper, is responsible for the motions and movements of the air in the atmosphere. The faster molecules movement, the hotter the air. Equally the molecules estrus and motion faster, they are moving autonomously. And then air, like nearly other substances, expands when heated and contracts when cooled. Considering there is more space between the molecules, the air is less

dense than the surrounding matter and the hot air floats upward. This is the concept used in the hot air balloons. The air is heated by the burner and the expanding air becomes less dense, causing the balloon to rise through the denser, cooler surrounding air.

Teacher directed activities