MIX & FLOW
CELLS & BODY
SYSTEMS
SYSTEMS
MECHANICAL SYSTEMS
LIGHT & OPTICS
WATER SYSTEMS
100
What are the three factors that affect the rate of dissolving?
The three factors that affect the rate of dissolving are temperature, agitation, and particle size.
100
what is the smallest unit of life?
Cells
100
what is the difference between input and output force?
Input force- input force is the force applied to the machine.
Output force- output force is a force by the machine.
100
law of reflection
The angle of reflection is equal to the angle of incidence.
100
how much freshwater is found on earth? where is most of our freshwater found?
2.5% of the earth has freshwater. Most of freshwater is found in icecaps and glaciers.
200
what is soluble and insoluble?
Soluble is a substance that dissolves in water easily, and insoluble is a substance that doesn't dissolve in water.
200
What is permeable selectively permeable?
A material or membrane allows some substances to pass through it, but not others.
200
It is a ratio of force you applied to the machine and force produced by the machine.
What is a mechanical advantage?
200
This part of the eye controls how much light enters by changing the size of the pupil.
What is the iris?
200
In this process water in oceans and lakes turns into vapour.
Evaporation
300
This property describes how easily a fluid can flow and is affected by temperature; honey has a high amount of it compared to water.
What is viscosity?
300
This system is responsible for transporting oxygen, nutrients, and waste throughout the body, and includes the heart, blood, and blood vessels.
What is the circulatory system?
300
The pressure applied to a confined liquid is transmitted evenly through the fluid in all directions.
what is the pascal law?
300
This process occurs when light bends as it passes from one material into another with a different density, like from air into water.
What is refraction?
300
This is the underground layer of rock or sediment that holds and allows water to flow through it, supplying wells and springs.
What is an aquifer?
400
What are the 3 points in the Particle Theory of Matter?
1) Particles have mass
2) Particles are always moving
3) Particles have spaces between them
400
what is the job of stomach mucus?
Protect the stomach lining from dissolving itself by the stomach acid
400
What is egonomics?
The science of designing tools, equipment, and workspaces to fit the needs of the human body, making tasks safer, more comfortable, and more efficient.
400
This type of mirror curves inward like a bowl and can focus light to a single point, often used in flashlights and telescopes.
What is a concave mirror?
400
An area that separates water flow to different rivers, basins and seas.
Watersheds
500
what should you do to decrease the viscosity of a liquid? why?
To decrease the viscosity if a liquid you need to increase the temperature. You need to increase the temperature because that decreases attractive forces between liquid particles, which makes it less vicious.
500
How is the respiratory and circulatory system connected?
Alveoli
500
This type of simple machine consists of a grooved wheel with a rope or cable and can be fixed or movable; it's often used to change the direction of a force or make lifting easier.
What is a pulley?
500
When light passes from air into water, it slows down and bends toward this imaginary line that is perpendicular to the surface.
What is the normal?
500
This term describes the large, slow-moving mass of ice that forms from compacted snow over many years and shapes landscapes through its movement.
What is a glacier?