Structures & Forces
What are the 4 factors that designers and engineers take into account when designing a structures?
-Cost
- Appearance
- Environment
- Energy Efficiency
What are the 4 basic needs that every organism needs to survive?
- Food
-Water
- Shelter
- Air
What are are 2 problems humans have encountered in using energy from heat?
1. Burning themselves
2. Burning down their homes.
Who was the first man on the moon?
Neil Armstrong
What are the 4 internal forces? And describe them.
- Tension Force: stretch a material by pulling its ends apart.
- Compression Force: crush a material by squeezing i together.
- Shear Force: bend or tear a material by pressing different parts in opposite directions at the same time.
- Torsion Force: twist a material by turning the ends in opposite directions.
What are the 3 points of the particle model of matter?
- All substances are made up of particles too small to be seen by humans.
- The particles in the liquids and gases are always moving. (Vibrating, Rotating, and Moving from place to place.)
- The particles have spaces between them, they are not all clumped together.
What is your ecological footprint? And how do you reduce it?
Your Ecological Footprint is a calculation of the total area of land and water needed to supply all of the materials and energy a human uses, as well as absorb the waste produced. To reduce this you need to watch what you buy, try not to buy a lot of things with rappers and what not. To reduce this basically just don't pollute.
How many planets are in the solar system?
8 planets.