Science 9: Unit C 3.0 Review

When chemical scatter in different directions in the air, this is called

• deposition

• dispersion

• permeable

• leaching

As you dig further down into soil, you’ll find a layer where pores only contain water. This is called the

• groundwater

• confined

• water table

• pores

If water soaks into the ground and moves downward it can take chemicals with it. This water is called

• leaching

• leachate

• runoff

• silt

True or false: When something is said to be permeable, it is a substance that allows water to pass through.

• True

• False

This does not allow water through it - we call it

• permeable

• impermeable

• sand

• silt

When too many hazardous chemicals enter the environment, these methods can be used to fix it:

• Dispersion

• Dilution

• Biodegradation

• Phytoremediation

• Photolysis

True or False: Anaerobic bacteria need environments with oxygen in order to biodegrade materials

• True

• False

A plant absorbs a hazardous chemicals -> a caterpillar eat the plant -> a bird eats the caterpillar.

This is an example of

• biodegradation

• dispersion

• erosion

• biomagnification

These sheets provide detailed descriptions of the hazardous products and proper handling of them. What are they called?

• WHMIS

• Hazardous Awareness

• MSDS

• Information Data Sheet

What safety symbol is this?

• Flammable 
• Oxidizing Agent
• No Open Flame
• Explosion