This organelle is the "command centre" of the cell.
What is the nucleus?
100
This is the name of the principle that pressure applied to one part of a closed system, will be applied equally to all other parts of the system.
What is Pascal's Law?
100
This structure, found in the eye of many nocturnal animals (including sheep), is not found in the human eye.
What is the tapetum lucidum?
100
Many types of sporting equipment provide good examples of this type of lever, which has fractional mechanical advantage, but provides greater speed.
What is class III?
100
When snow gradually accumulates over an extended period of time, it can become a flowing sheet of ice. What name is used for these structures?
What is glacier?
200
These structures are designed to greatly increase the surface area on the inside of the small intestine.
What are villi?
200
This term is used to describe the process of a solid, becoming a gas.
What is sublimation?
200
The image formed by this type of lens will always be smaller than the object, upright, and virtual.
What is concave?
200
In large ships, blades are arranged along an axle, and are turned by pressurized steam. This provides motion to the propeller, which drives the ship. What is this system called?
What is a steam turbine?
200
This number represents the percentage of water on Earth, that is fresh.
What is 3?
300
This structure allows plant cells to maintain their shape.
What is the cell wall?
300
This measurement is often used to describe the viscosity of a substance.
What is flow rate?
300
When red light, blue light, and green light are produced or reflected together, the result is light of this colour.
What is white?
300
No machine can ever be 100% efficient. This happens because some energy is always lost to heat, as a result of this force.
What is friction?
300
Organisms in the deepest, darkest parts of the ocean cannot conduct photosynthesis. In such places, entire food chains rely on these organisms, to produce their energy.
What are bacteria?
400
The kidneys are an important part of this system, in the human body:
What is the excretory system?
400
In this state of matter, the particles are tightly packed, and vibrate slightly, from side to side.
What is solid?
400
This form of radiation is produced in the part of the electromagnetic spectrum where waves have the shortest wavelength.
What are gamma rays?
400
This term describes a phenomenon by which the distance over which a force is applied is increased, in order to use less force.
What is mechanical advantage?
400
Most of the water in southern Alberta eventually drains into this body of water.
What is Hudson's Bay?
500
This term describes the movement of water into or out of a cell, in order to balance the concentrations of solutes on either side of the membrane.
What is osmosis?
500
This is the name used for a mixture formed by dissolving two metals in each other, in their liquid state.
What is an alloy?
500
This part of the human eye is analagous to the digital array, in a digital camera.
What is the retina?
500
On a bike, the front (driving) gear turns once for every two and a half turns of the rear (following) gear. What is the speed ratio of this system?
What is 2.5?
500
This is the main cause of waves, on the oceans of the world.