Show:
Mix and Flow of Matter
Cells and Systems
Light and Optical Systems
Mechanical Systems
Fresh and Salt Water Systems
100
What does the octagon of whmis represents?
Danger
100
The basic unit of life.
A cell
100
light travels in ________ lines.
Straight
100
What is the job of a machine?
It is designed to make life easier.
100
what percent of the worlds water is freshwater, and what percent is saltwater?
freshwater is 3% saltwater is 97%
200
______ is anything that takes up space, including plasma.
Matter
200
It can perform the same task, but may be different.
A structure
200
What is the law of reflection?
When light hits a flat plane the angle of incidence is equal to angle of reflection
200
Name the six simple machines.
Pulley,lever,wedge,wheel and axle,inclined plane,screw.
200
What percent of fresh water is ice, groundwater, and above ground water
ice is 77% ground water is 22% above ground water is 1%
300
You can dissolve more solute in a _______ solvent.
Warmer
300
Breakdown of food using enzymes.
Chemical digestion.
300
white light can be split into the other colors by using a what?
A prism
300
What is a complex machine?
A complex machine is a machine made up of multiple simple machines.
300
What are at least 5 materials found in water?
sodium chloride sulphate magnesium calcium potassium
400
What is it called when an object can stay suspended in a fluid due to the buoyant force and gravitational force being equal.
Neutral buoyancy
400
The liver is part of what body system?
The excretory system.
400
Visible light is found where on the electromagnetic spectrum?
In Between infrared and ultraviolet light.
400
which gear is bigger, driving or driven.
Driving gear.
400
How can you tell if a beach will be rocky or sandy?
If the beach is steep it will be rocky, if the beach is shallow it will be sandy.
500
A submersible uses a device that allows air to enter and leave allowing it to rise and lower in water.
A ballast
500
the act of heating something up to kill germs.
Pasteurization.
500
What is frequency?
Frequency is the number of wavelengths in a given amount of time.
500
Name at least 2 simple machines in a bicycle.
Wheel and axle,lever.
500
Approximately how may high tides and low tides will there be every 49 hours and 40 minutes.?
4 low tides and 4 high tides.