Download Science: Waste and Our World

Science: Study Guide
Waste and Our World
1. What do plants and animals produce? Waste
2. List some examples of natural waste?
 Bug shells
 Dead leaves
 Droppings
 Dead tree/plants
 Feathers
3. Name some decomposers (master #5)
 Ants
 Spiders
 Worms
 Centipedes
 Millipedes
 Beetles
 Larvae
 Maggots
 Fungi
 Wireworms
 Bristletails
 Lichens
Define:
Producer- an organism that can produce its own food
Consumer- 1. In nature: any organism that cannot produce its own food.
2. In society: anyone that uses anything produced by that society.
Decomposer- organisms that break down and help decay dead plant and
animal matter.
Leaf litter- dead plants and leaves on the top of the soil.
Aerated- mixed with air
4. What two jobs do organisms have?
1. The organisms help keep the soil aerated by creating air spaces as
they move through it.
2. They digest organic matter by breaking into smaller and smaller
pieces and mix it into the soil.
5. Why are they called nature’s recyclers?
They are called nature’s recyclers because they help decompose leaves
and dead trees and other organic matter.
6. (master #17) Give some examples of biodegradable items
 peelings from fruit and vegetables
 egg shells
Natural
 woolen socks
fibers
 cotton
 natural things
7. Give some examples of non-biodegradable items
 Glass
 Metal
 Skate blade
 Aluminum
 Rubber tubing
 Keys
 Man-made items
8. What is the purpose of a landfill?
 To provide a suitable place for garbage.
 To keep our environment clean
10. What can you do to keep the landfill open for a longer time?
 Recycle
 Re-use things (hand me downs)
 Compost
 Fix thing/rebuild things

(Video)
11. What containers can be recycled in Alberta
 PET items (plastic bottles)
 Aluminum (pop cans)
 Polycoat ( juice boxes)
 Glass
12. What are these things made into?
 PET items (plastic bottles)= carpet, polar fleece
 Aluminum (pop cans)= Aluminum sheeting, cans
 Polycoat ( juice boxes)= napkins
 Glass = insulation, road paint
13. How is water wasted at home?
 Running the tap while brushing teeth
 Running half full dishwashers
 Watering the lawn in the middle of the day
 Extra long showers
 Leaky taps
14. How can we save water at home?
 Shorter showers
 Fix leaky taps
 Run dishwashers and washing machines with full loads
 Water lawn at appropriate times
15. Be able to identify the symbols for: poison, corrosive, explosive and
flammable.
16. Be able to identify toxic and non-toxic items.
17. List natural cleaning products.
 Baking soda
 Borax
 Cornstarch
 Lemon juice
 Salt
 Vegetable oil
 Vinegar
 Witch hazel
18. Know the 3 R’s – Reduce, Reuse, Recycle