structures and forces

1. external forces

1.1. forces that act outside of the structure

1.2. gravity

1.3. air resistance

1.4. water resistance

1.5. friction

2. types of structures

2.1. solid

2.1.1. boulder

2.1.2. bridge

2.1.3. banana

2.2. frame

2.2.1. car

2.2.2. glass dome

2.3. hollow/ shell

2.3.1. igloo

2.3.2. pyramid

2.4. combination structures

2.4.1. skeletons (humans)

2.4.2. playground

3. internal forces

3.1. compression

3.2. shear

3.3. torsion

3.4. tension

4. function

4.1. house

4.1.1. used for housing people

4.2. water bottle

4.2.1. used for holding water to drink

4.3. what/ how structures are make (looks)

5. loads

5.1. live load

5.1.1. objects or people that are on the structure

5.1.1.1. people

5.1.1.2. animals

5.1.1.3. furniture

5.2. dead load

5.2.1. the structure itself

5.2.1.1. house

5.2.1.2. bag

5.2.1.3. bed

5.3. dynamic load

5.3.1. anything eles that acts on the structure

5.3.1.1. wind

5.3.1.2. hail

5.3.1.3. rain

5.3.1.4. storms

6. form

6.1. how the structure looks like/ is built

6.2. plastic bag

6.2.1. built with a handle and like a bag

6.3. laptop bag

6.3.1. made to hold the laptop without scratching it