Mix and Flow of Matter
This is the smallest particle of an element that still has the properties of that element.
What is an atom?
This structure controls what enters and leaves a cell.
What is the cell membrane?
This process changes liquid water into water vapour.
What is evaporation?
This simple machine consists of a rigid bar that pivots around a fulcrum.
What is a lever?
This is the bouncing of light off a surface.
What is reflection?
This type of mixture has a uniform appearance throughout.
What is a solution (homogeneous mixture)?
These tiny structures inside cells perform specific functions.
What are organelles?
This percentage of Earth's water is freshwater available for human use.
What is less than 1%?
This quantity is calculated by dividing output force by input force.
What is mechanical advantage?
This occurs when light changes direction as it passes from one medium to another.
What is refraction?
This process separates a dissolved solid from a liquid by heating the liquid until it evaporates.
What is evaporation?
A group of similar cells working together forms this.
What is a tissue?
This term describes the area of land that drains into a common body of water.
What is a watershed (drainage basin)?
The formula F × d is used to calculate this quantity.
What is work?
This device uses lenses to make distant objects appear closer.
What is a telescope?
In the particle model of matter, particles are always doing this.
What is moving?
This organ system is responsible for transporting oxygen and nutrients throughout the body.
What is the circulatory system?
This measure of water quality tests how acidic or basic a body of water is.
What is the pH scale?
This measure indicates how much force put into a machine makes it to the load on the other end.
What is efficiency?
White light can be separated into visible colours using this object.
What is a prism?
This property describes how resistant a fluid is to flowing.
What is viscosity?
This lung structure is where oxygen enters the bloodstream and where carbon dioxide is dropped off to be breathed out.
What are the alveoli?
This phenomenon occurs when excessive nutrients cause rapid algae growth in a body of water.
What is eutrophication?
This law states that energy cannot be created or destroyed, only transformed.
What is the Law of Conservation of Energy?
This eye condition occurs when light focuses in front of the retina rather than directly on it.
What is myopia (nearsightedness)?