Science Chapter 7 - Review Flashcards
What are fluid technologies. Give an example of one
Fluid technologies is just technologies designed to incorporate fluids in their design so they can complete certain tasks. One major example is submarines. To sink underwater, your weight needs to be heavier than water. Scientists used this knowledge to create submarines. In these vessels, there is a tank of air that surrounds the cockpit of the submarine capable to capture and release water. With this extra water, the watercraft can sink below the surface level of water
What are fluids. Give examples
A fluid is any substance that flows. Fluids come in all sorts of ways ranging from molten lava to motor oil. We use some of these fluids to in our machines and systems to work more efficiently
Can fluids Transport solids? If so, explain
A mixture of solids and water is called a slurry. We use slurry technologies - transporting solids in water - is important to many applications. We use Slurry’s in many ways ranging from making slurry’s out of wood pulp and water to create paper to using slurry’s to transport mineral ores out of mining sites
Can fluids hold Gases? If so, explain
No, they cant
Can fluids hold other materials? If so, explain
Fluids also can be used to hold other materials within them. We use this ability in many ways. One of these ways is fire planes, which sprays water holding fire retardants to0 help stop forest fires quicker
Can Fluids become solids? If so, explain
Fluids have the ability to transform into solids. Because of how much easier it is make fluids into precise shapes as well as transport, we make more objects around you with them. For instance, we transport liquid concreate to the area in which there is a mold. We then pour the liquid concreate into this mold and let it harden. It takes the shape of the mold and because a hard piece of concreate in the shape of the mold we poured the liquid in
Are there other uses of liquids, beside the main three? If so, explain
Among the three main ways we use fluids, there is a handful more that don’t quite fit into any of the categories. As for an example, both oil and special fluids. We use oil in moter automobiles engine’s to decrease the friction, and we use specials fluids that circulate in the back of a fridge or radiator to keep the object warm or cool depending on the machines need’s
What is The particle theory of matter. ( The six points )
The particle theory of matter is a simple way of describing matter and its behavior.
- all matter is made up of particles
- all particles are in constant motion
- all particles of one substance are identical
- temperature affects the speed at which particles move
- in liquids and solids, the particles are close together and have strong force’s of attraction
- In a gas, there is spaces between the particles
Can liquids flow? If so, explain and provide and example
liquid particles have the ability to overcome so of their attractions. Because of this, they take the shape of the container and flow. For example, when liquid goes into a box and takes the shape of a box
Can gasses flow? If so, explain and provide and example
gas particles speed combined with there distance from each other helps them overcome almost all of their attraction to each other. because of this they spread out too all parts of the container there in. For example, air fresheners are sprayed and the particles spread across the room
Can Solids flow? If so, explain and provide and example
No, they cant
What is thermal expansion and contraction
When the temperature of a solid, liquid, or gas becomes very irregular, that substance expands or contracts based on the irregularity being caused by a hot or cold temperature. This is why sidewalks have cracks in them: so when they expand, they don’t crack
