Matter & Mixtures
A substance made of only one type of particle.
What is a pure substance?
The basic unit of life.
What is a cell?
Light travels in a straight line unless this happens.
What is reflection or refraction?
A device that makes work easier.
What is a simple machine?
Saltwater is mostly found here.
What are oceans?
A mixture that needs to be shaken.
What is a suspension?
This system transports oxygen and nutrients.
What is the circulatory system?
A tool used to bend light.
What is a lens?
A ramp is also called this type of machine.
What is an inclined plane?
The continuous movement of water on, above, and below the Earth's surface.
What is the water cycle?
The particle model of matter has how many main points?
What is four?
The job of the mitochondria.
What is producing energy (ATP)?
The bending of light as it passes through materials.
What is refraction?
The force that slows or stops motion.
What is friction?
A glacier is made of this.
What is freshwater?
A mixture that looks like one substance but is made of more than one.
What is a solution?
Tissue that sends signals through the body.
What is nerve tissue?
This part of the eye focuses light on the retina.
What is the lens?
The ratio of output force to input force.
What is mechanical advantage?
The movement of ocean water caused by wind.
What is a current?
The difference between viscosity and flow rate.
What is viscosity is resistance to flow, and flow rate is how quickly it flows?
The type of digestion that occurs in the stomach.
What is mechanical and chemical digestion?
The difference between concave and convex lenses.
What is concave lenses diverge light, convex lenses converge light?
A pulley changes this when lifting an object.
What is the direction of force?
The difference between point and non-point source pollution.
What is point source has one origin; non-point is widespread?