sonja

(1) where does background ultraviolet radiation come from?

(2)how should a radiation worker feel about use of radiation sources?

(a)they should be handled with care, but they are always dangerous (b)the hazards associated with handling any radiation source depends on time, distance and shielding(c)they are always extremely dangerous to work with

(3)a beta particle is simply a high speed _____

(a) alpha particle (b) proton (c) neutron (d) helium nucleus (e) electron

(4) which of the following things would you say are naturally radioactive?

(a) air (b) water (c) air and soil (d) soil (e) all of the above

(5) one valuable characteristic of fission is the amount of energy released for each disintegrating atom is ________.

(a) one of the largest known (b) substantial (c) small (d) intermediate (e) unlimited

(6) when large unstable nuclei split because the electric force is greater than the nuclear force, this is called ______

(a)nucleus (b)nuclear physics (c)artificial radioactivity (d)natural radioactivity (e)artificial transmutation

(7) the radioactive emissions which have no electric charge are _______

(a)proton (b)gamma rays (c)alpha particles (d)helium nuclei (e)beta particles

(8) when a nucleus splits, the mass number is equal to the ______

(a)mass number of the ejected particle (b)mass number of the remaining nucleus (c)the energy released (d)the sum of a and b (e)none of the above

(9) which of the following radioactive emissions is not a particle

(a)proton (b)alpha (c)beta (d)neutron (e)gamma ray

(1) The force of repulsion between protons in the nucleus of small atoms is _____ the nuclear force of attraction.

(a) greater than (b) equal to (c) less than (d) too small to be measured compared with (e) both b and d

(2) The range of half-lives of different radioactive elements is from _____.

(a) hours to years (b) days to months (c) seconds to billion of years (d) hours to weeks (e) days to weeks

(3) Hydrogen nuclei collide at high speeds to form helium nuclei. This is called ______.

(a) fission (b) half-life (c) a reactor (d) radioactivity (e) fusion

(4) a device which controls the rate of nuclear fission reaction is called a(n) ______.

(a) hydrogen bomb (b) chain reaction (c) atomic bomb (d) nuclear reactor (e) electrostatic precipitator

(5) The process in which each split atom gives up neutrons which in turn split other atoms and so on is called a(n) ______.

(a) disaster (b) nuclear reactor (c) fusion reaction (d) chain reaction (e) meltdown

(6) Uranium (235) and uranium (238) have the same number of protons but different numbers of neutrons. These 2 elements are said to be radioactive _______.

(a) half-lives (b) isotopes (c) bombs (d) molecules (e) tracers

(7) large nuclei are unstable because the nuclear force _______.

(a) increase as protons move farhter apart (b) decrease as protons move farther apart (c) remains unchanged as protons move farther apart (d) remains unchanged as protons come closer together (e) both a and d

(8) The radioactive emission with the weakest penetrating power is the _______.

(a) alpha (b) X ray (c) gamma (d) beta (e) neutron

(9) The atom that remains after a nucleus disintergrates is______.

(a)larger than the original atom and possibley radioactive(b)larger than the original atom and not radioactive(c)smaller than the original atom and not radioactive(d)larger than the original atom and not radioactive(e)smaller than the original atom and possibly radioactive

(10) In a nuclear disintegration (splitting of an atom), the particle that is ejected may be ______.

(a) a helium nucleus (b) a high speed electron (c) a neutron (d) energy (e) a, b, or c

a) individuals from being like their parents

b) instinctive behavior

c) fish from flying

d) learned behavior

e) none of the above

ok the story goes i was living with my dad and he was abuseful he would try to put my head through a wall he dislocated my shoulder and he told to get out of his house and when i tryed to leave he clothes lined me and picked me up by my throat and through me on the couch well i was determine to do anything and everything to get out of his house so one day i went to the store below the house and i didn't want to do it but i stuck a pack of ciggars in my pocket well i got busted and now i cant see my boyfriend or go any where with any of my friends but see what the court dont know is that whole story and that i live in a abuseful home now too with my mom and my question is how can i get the court to believe me and tell them that whole story with out them adding time to my probation cause me and my boy friend was suppose to get married this summer and my mom lied and said i was going to run away with him when i wasn't and thats why i cant see him. my mom knows how to play the court will well to so im going to need alot of help

a) human activities

b) regions

c) spatial content

d) human-enviroment interaction

Asia has over 2 billion people, with an average of 185 per square mile, while Europe has only 460 million people, but averages over 240 persons per square mile.Interpreting these facts means that ______.

a) Europe has a higher death rate

b) The great plagues of the Middle Ages had a devasting effect on Europe's population

c) Europe has a much older population than Asia

d) Asia is a much larger land mass than Europe

e) Asia has the higher population density

All the following are examples of population distribution, EXCEPT __________.

a) The median age of the American population will be 30 in 1981.

b) Africa has 29 people per square mile.

c) The United States has one-fourth of the world's coal supply within its borders.

d) The population of the United States is around 225 million people.

e) Japan has 764 people per square mile while the United States has only 54 people per square miles.

Which geography theme most closely matches the following:

The state of Hawaii is located in the Pacific Ocean and contains seven islands.

a) human-enviroment interaction

b) physical process

c) spatial content

d) human activities

a) processing sewage

b) driving together rather than separately

c) dropping controls on nuclear development

d) increasing the sulfur content of fuels

e) building water sheds

a) genetic planning

b) innate behavior

c) a complex endocrine system

d) instinct

e) experience

The type of learning used in a dog obedience training is _______.

a) taxis

b) habit formation

c) reasoning

d) conditioning

e) trial and error

a) conservation

b) garbage

c) the biosphere

d) pollution

e) ecology

Niagra Falls actually moves back 3.6 centimeters a year due to the erosion caused by the falling water.

a) human-enviroment interaction

b) regions

c) physical process

d) spatial content

a) is not a problem

b) is healthy for the world's populations

c) may be responsible for lowering the planet's temperature

d) can slow down the heat that radiates away from the earth

e) none of the above

a) the birth rate is zero

b) the death rate is zero

c) the birth rate and death rate are the same

d) the population density is zero

e) both c and d are correct

a) drinking alcohol before a meal

b) smoking

c) swallowing dentures

d) eating without dentures

a) first degree

b) second degree

c) third degree

d) fourth degree

a) coughed up blood

b) rapid breathing

c) cold, clammy, pale skin

d) thirst

e) slow and weak pulse

a) are antigens

b) aid in digestion

c) must remain inside the blood vessels

d) are pathogens

e) can ingest pathogens

1) name one of the three sources of energy for the body.

2) _______ have no energy value but are crucial to good health.

3) In the mouth, food is mixed with _____, a mixture of water, mucus, and enzymes.

4) feelings of inadequacy, low self-esteem and lack of control of one's life can contribute to eating disorders.

true or false

5) some health consequences of anorexia nervosa are

a) abnormally slow heart rate and low blood pressure b) tooth decay c) muscle loss and weakness d) dry hair, skin and nails e) irregular bowel movements as a result of laxative abuse

6) sall finger-like projections call _____ in the small intestine, act to increase the surface area for absorption.

6) anorexia nervosa is characterized by self-starvation and excessive ______ loss.

8) you need to eat enough of each type of food from the food guide pyramid to ensure adequate intake of nutrients. Which diet planning principle does this statement describe?

a) calories b) variety c) balance d) moderation

9) the muscular action that propels food through the esophagus is called ______.

10) digestion of complex carbohydrates begins in the

a) stomach b) small intestine c) mouth d) large intestine

11) the five food groups are bread, cereals, ans other grain products; meat, poultry, fish and lemumes; vegetables, milk, cheese and yogurt, and _________.

12) the need for this nutrient by the body is second only to oxygen.

a) water b) protien c) vitamins d) fat

13) the best thing you can do for someone you suspect may have an eating disorder is to ignore the problem.

true or false

14) a symptom of the eatind disorder __________ is strict dieting followed by eating binges.

15) the medium for all body fluids and for regulating the body's temerature is __________

16) _______ is the complex mixture of salts and pigments produced by liver and stored in the gallbladder until needed.

17) a good thing to remember when you're planning your diet is to eat your way to the _________ of the pyramid.

18) ___________ is a measure of the nutrients a food provides relative to the energy it provides.

a) nutrient density b) variety c) adequacy d) moderation

19) the base of the food pyramid represents the _______ food group.

a) meat, poultry, fish, and legumes b) vegetables c) breads, cereals, and whole grains d) fruits

20) the ________ sphincter is at the lower end of the stomach and regulates the outflow of chyme.