Ecosystems.
What are two essential parts of an ecosystem?
Two main components exist in an ecosystem: abiotic and biotic.
(The abiotic components of any ecosystem are the properties of the environment; the biotic components are the life forms that occupy a given ecosystem.)
What shape is commonly used for structures?
A Triangle.
What is an internal force?
A force that acts on the inside of a structure.
Conduction.
What is another term we can use for homogeneous mixtures that contains a solute and solvent?
Solution.
What is an ecosystem?
An ecosystem is a community of living organisms interacting with each other and their physical surroundings in a collected environment. It includes both biotic and abiotic components.
What are two main causes of structural failure?
The two main causes of structural failure are:
1. (Design errors), such as improper calculations or poor structural analysis.
2. (Construction defects), including poor workmanship, or improper installation.
Stretching you hand up in class, is an example of what internal force?
Tension.
Name three ways that conduction helps humans? Answers may vary.
Some examples: Heat from the stove travels to the pan to cook the food. A cup of hot chocolate transfers energy to your hands to keep you warm. The fire from a fireplace warms the air around it.
In heterogeneous mixtures, particles are not distributed ________________.
evenly/uniformly.
What is matter cycling?
Matter cycling refers to the movement of matter from one form or place to another on Earth. It involves recycling elements within and between ecosystems, which is known as biogeochemical cycles.
Examples of matter cycling include the carbon cycle, nitrogen cycle, and water cycle.
What are the purposes of a symmetrical system?
A purpose of a symmetrical system is to create an ordered and balanced design or environment. Symmetry can also make elements easily recognizable and pleasing to the eye. Symmetry may also allow multiple processors to access the same memory and input/output devices, and to run independently and equally.
When you blink, your eyes close and open in opposite directions. What internal force is this?
Shear.
What are three types of radiations?
Visible light, microwaves, infrared radiaion.
Vegetable soup, oil and water, cereal are examples of
a. homogeneous mixture
b. heterogeneous mixture
c. solution
Heterogeneous mixtures.
What are the two laws of Thermodynamics? (Explain)
The first law of thermodynamics, states that energy can’t be created or destroyed but only transformed or transferred.
The second law of thermodynamics means that the disorderliness of an isolated system always increases over time.
What is the ten manufacturing factors that companies have to think about before creating their products.
1. Cost
2.Availability
3. Ability to manufacture
4. Strength and durability
5. Sustainability
6. Climate
7. Aesthetics
8. Life of the material
9. Handling and storage
10. Skills required
What is precipitation?
Precipitation refers to any liquid or frozen water that forms in the atmosphere and falls back to the earth. It includes various forms such as rain, sleet, snow, and hail, and is a key part of the global water cycle.
What is not true about conduction?
A) Conduction continues until the temperatures of the objects are the same.
B) Conduction transfers heat through solids.
C) Conduction still occurs when the objects are the same temperature.
D) Conduction can occur within a single object
C) Conduction still occurs when the objects are the same temperature.
When substances combine to form a mixture, they
A. keep their original properties.
B. form new chemical bonds.
C. form a new compound.
D. cannot be separated physically.
A. keep their original properties
What is each ecological succession? How long does each process take?
Primary succession is the initial colonization of living things in a previously lifeless area. It is an ecological succession in which a group of species or a community colonizes a freshly created region for the first time. In contrast, secondary succession is the re-colonization of a region after a significant disturbance. The end result of succession is the establishment of a climax community.
Primary succession takes a longer time to complete. Secondary succession takes a shorter time to complete.
In "Way Cool Scientist," the scientist was discussing using what kind of mud to build their structures?
Abode mud.
How do External and Internal structures affect a structure?
External forces on structures are stresses that act on a structure from outside the structure. External forces produce internal forces, or stresses, within the materials from which the structure is made. These internal stresses can change the shape or size of a structure and is called deformation.
Shear, tension, compression, and torsion are types of internal forces that can affect structures. This is an example of when you were younger, building towers of any sort and knocking them down.
What are convection currents and how do they flow? Explain the process in which convection occurs.
(Answers may vary.)
Convection currents are the pattern of movement that occurs when a gas or liquid rises as it becomes warmer in one area and sinks as it becomes cooler in one area, it flows in a continuous loop. As the air is heated, its molecules begin to spread apart, getting less dense and rising. As the warm air rises into the atmosphere, it begins to cool. When the air is no longer warmer and less dense that the air above it, it will stop rising. The air then begins to cool as it molecules get closer together, the cool air begins to sink when it becomes denser than the warmer air beneath it. The cool air sinks and replaces the warm, rising air.The cooler air is then warmed by conduction with the Earth's surface, rising as well.
Does mixing oil and water create a homogeneous mixture? Why or why not?
(Answers may vary.)
Mixing oil and water creates a heterogeneous mixture because we can see the oil and the water.