Exam #4

Question 1

top 5 causes of death in the world

Answer 1

1. heart attack
2. stroke
3. copd
4. diahrrea
5. lower respiratory inf

Question 2

1 cause of death in canada

Answer 2

cancer

Question 3

top 3 causes of death in india

Answer 3

1. cardiovascular
2. respiratory disease
3. tuberculosis

Question 4

top 3 causes of death in china

Answer 4

1. malignant tumour
2. heart disease
3. cerebrovascular disease

Question 5

how much death can we prevent from fixing the environment?

Answer 5

13 million

Question 6

malaria most prevelant in which country?

Answer 6

africa

Question 7

Environmental Toxins Common in Canada

Answer 7

Asbestos
Carbon monoxide
Radon
Lead/Mercury
Chemicals 
Mold
Electrosmog
Pesticides
Air pollution
Water  quality
Smoking and second hand smoke

Question 8

what is Asbestos

Answer 8

Six different types of silicate crystals found naturally in the earth

Question 9

what can asbestos cause?

Answer 9

When fine particles are inhaled causes serious and permanent respiratory problems such as lung cancer

Question 10

radon gas is produced..

Answer 10

Produced naturally by radi0active decay of uranium in the ground

Question 11

second highest cause for lung cancer is…

Answer 11

radon gas

Question 12

what is carbon monoxide

Answer 12

Carbon monoxide (CO) is a gas that forms whenever you burn fuel like propane, natural gas, gasoline, oil, coal and wood

Question 13

what is carbon monoxide poisoning doing to your body?

Answer 13

Carbon monoxide attaches itself inside blood cells to hemoglobin, the agent that helps carry oxygen. CO limits the ability of hemoglobin to take on oxygen and the brain, organs and other tissues become oxygen-starved.

Question 14

what is BPA?

Answer 14

polycarbonate plastics (typically very hard, clear plastics, such as hard, reusable water bottles and children’s sippy cups). Recycle code 7
the resins that line food cans
some dental materials, such as sealants or composite fillings, which contain low amounts of BPA derivatives (BPA is only present in saliva for up to 3 hours after a dental procedure that uses sealants or composite fillings)

Question 15

what does BPA disrupt?

Answer 15

• estrogen hormones
• affect sperm production
• affect fertility
• cause persistent changes in mammary gland (breast tissue) development
• Cause persistent changes in the prostate gland

Question 16

insecticides are for..

Answer 16

insect control

Question 17

herbicides are for…

Answer 17

weed control

Question 18

fungicides are for..

Answer 18

for control of disease caused by fungus

Question 19

rodenticides are for..

Answer 19

rodent control

Question 20

fumigants are for…

Answer 20

a gas or vapour used to control insects

Question 21

herbicides are class… and can cause…

Answer 21

class 2 (evidence to prove may be cancer causing)

Question 22

what are Phthalates…

Answer 22

Phthalates are a group of chemicals that can make products (usually plastics) softer and more flexible. They are sometimes called plasticizers, though there are many other types of plasticizers too.
Phthalates are used in a range of products, including:
PVC (polyvinyl chloride) plastics (a specific type of plastic used in some products, such as shower curtains)
medical plastics, such as PVC IV bags and tubes
children’s toys and supplies
cosmetics, such as nail polish and perfumes

Question 23

what is fracking?

Answer 23

a technique in which typically water is mixed with sand and chemicals, and the mixture is injected at high pressure into awell to create small fractures (typically less than 1mm), along which fluids such as gas and petroleum
Hydraulic pressure is removed from the well, then small grains of sand or aluminium oxide hold these fractures open once the rock achieves equilibrium.

Question 24

what environmental concerns does fracking produce?

Answer 24

Each well requires approximately 5-8 million gallons of fresh water which is then polluted and cannot be cleaned
Ground water may now be exposed to carciongens and radioactive gas
Hydrogen sulfide gas is burned. This gas is known as sour gas and has shown to be related to CNS and respiratory health problems
Methane gas produced. This is second largest contributor to greenhouse gases

Question 25

two types of waves..and what it is

Answer 25

1. electromagnetic (travel at speed of light and do not require a medium to transfer energy)
   2,mechanical (sounds waves, waves in water – deform the medium and travel more slowly)

Question 26

how is the electrical field created?

Answer 26

created by the charged particle itself (electron or proton)

Question 27

does distance of source matter?

Answer 27

yes example: cell phones