AVSIM is a free service to the flight simulation community. AVSIM is staffed completely by volunteers and all funds donated to AVSIM go directly back to supporting the community. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. Thank you for your support! Click here for more information and to see all donations year to date.
Donation Goals
AVSIM's 2019 Fundraising Goal
Donate to our annual general fund. This donation keeps our doors open and providing you service 24 x 7 x 365. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. We reset this goal every new year for the following year's goal.
Example of cracking in chemistry. • Frost shattering can result in many large loose rocks, referred to as, that can be found along the bottom or slopes of mountain areas. • Forest and range fires can cause rocks that are located along the surface of the ground to weather. The heating and cooling processes that happen every day put stress onto rocks in the outer layer, causing the outer layers of the rock to start peeling off in thin sheets.