Show:
Cells and Body Systems
Fluids
Light
Mechanical Systems
Water
100
This organelle is the "command centre" of the cell.
What is the nucleus?
100

We can calculate this property of a substance by dividing its mass by its volume. 

What is density?

100

What the light ray reflecting off a mirror is called when it first hits the mirror.

What is the incident ray?

100

Many types of sporting equipment (such as a hockey stick) provide good examples of this type of lever, which has a lower mechanical advantage, but provides greater speed advantage.

What is class III?

100

When snow gradually accumulates over an extended period of time and is subjected to increasing pressure, it can become a flowing sheet of ice. What name is used for these structures?

What is glacier?

200

This organelle is known as the cell's "powerhouse", breaking down sugars and providing energy to the cell. 

What are mitochondrion?

200

This property of fluids describes how "thick" or "thin" a fluid is.

What is viscosity?

200

True or False: The angle of incidence of a light ray is equal to the angle of refraction.

What is False?

200

This simple machine is the main one found in the blade of an axe. 

What is a wedge?

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

Water that is safe for humans to drink is called.

What is potable water?

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 is the part of a lever that pivots. 

What is the fulcrum?

400

The process where water tears away at soil, rock, and other solid materials at its edges and carries solids away/ 

What is erosion?

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 branch of engineering makes use of compressed gas or pressurized air to provide fluid power to various systems, including air brakes.

What is pneumatics?

500

State at least 3 of the 4 properties of light.

1. Light travels in straight lines

2. Light can be reflected 

3. Light can bend (refract)

4. Light is a form of energy

500

If a Gear with 80 teeth turns ONCE, how many times will the gear with 20 teeth turn?

What is 4 times?

500
This is the main cause of waves, on the oceans of the world.
What is wind?