Free Printable HARMONIC AND OVERTONES

1.

1. What is a harmonic?

a)

A. Any random frequency in a sound

b)

B. An integral multiple of the fundamental frequency

c)

C. A frequency lower than zero

d)

D. A frequency unrelated to the fundamental

2.

2. What is the fundamental frequency?

a)

A. The highest frequency in a sound

b)

B. The frequenB. The frequency of the second overtone

frequency of the second overtone

c)

C. The loudest frequency only

d)

D. The lowest natural frequency of a vibrating system

3.

3. The fundamental frequency is also known as the:

a)

A. First harmonic

b)

B. Second harmonic

c)

C. First overtone

d)

D. Third harmonic

4.

4. What is the first overtone?

a)

A. Fundamental frequency

b)

B. First harmonic

c)

C. Second harmonic

d)

D. Third harmonic

5.

5. Minerals are an important resource that comes from the earth. Which is NOT an example of a mineral?

a)

A. Copper

b)

B. Coal

c)

C. Iron

d)

A. Copper B. Coal C. Iron D. Chlorophyl

6.

6. ________ is often caused by heavy traffic, high temperatures, sunshine, and calm winds.

a)

A. Acid rain

b)

B. Global warming

c)

C. Climate change

d)

D. Smog

7.

7. These are the ways by which soil can be polluted EXCEPT_________.

a)

A. Dumping solid waste

b)

B. Deforestation

c)

C. Discharge of industrial and sanitary waste

d)

D. Agricultural farming

8.

8. The following are the causes that pollute marine waters EXCEPT__________.

a)

A. Inputs of waste are through pipes directly discharging wastes into the sea. Very often municipal waste and sewage from residences and hotels in coastal towns are directly discharged into the sea.

b)

B. Pesticides and fertilizers from agriculture which are washed off the land by rain, enter water courses and eventually reach the sea.

c)

C. Petroleum when burned produces gases and particulates which are pollutants. These include the poisonous carbon monoxide, hydrocarbons and nitrogen oxides.

d)

D. Petroleum and oils washed off from the roads normally enter the sewage system but storm water overflows carry these materials into rivers and eventually into the seas.

9.

9. Which of the following is NOT a cause for acid rain widespread environmental damage?

a)

A. Acid rain dissolves and washes away nutrients in the soil which are needed by plants. It can also dissolve naturally occurring toxic substances like aluminum and mercury, freeing them to pollute water or poison plants.

b)

B. Acid comes in different kinds with different unique characteristics which are used to identify how well crops can grow.

c)

C. Acid rain indirectly affects plants by removing nutrients from the soil in which they grow. It affects trees more directly by creating holes in the waxy coating of leaves, causing brown dead spots which affect the plant's photosynthesis.

d)

D. Acid rain that falls or flows as groundwater to reach rivers, lakes, and wetlands, causes the water in them to become acidic.

10.

10. Any undesirable effect caused to the environment due to radioactive substances or radiations is called ______________.

a)

A. Nuclear pollution

b)

B. Thermal pollution

c)

C. Noise pollution

d)

D. Acid rain

11.

11. Gases that trap heat in the atmosphere are called ________________.

a)

A. Greenhouse effects

b)

B. Greenhouse gasses

c)

C. Cause of greenhouse effect

d)

D. Global warming

12.

12. Which of the following is NOT an effect of global warming?

a)

A. Warming Ocean

b)

B Shrinking Ice Sheets

c)

C. Ocean Acidification

d)

D. Thickening of the clouds

13.

13. The ______________layer is a thin part of the Earth's atmosphere that absorbs almost all of the sun's harmful ultraviolet light.

a)

A. Atmosphere

b)

B. Clouds

c)

C. Ozone

d)

D. Troposphere

14.

14. The following are causes of the greenhouse effect EXCEPT____________.

a)

A. Deforestation

b)

B. Increase of population

c)

C. Industrial waste and land fields

d)

D. Reforestation

15.

15. When humans will be directly exposed to the harmful ultraviolet radiations of the sun due to the depletion of the ozone layer. These following might result in serious health issues EXCEPT__________.

a)

A. Strengthen immune system

b)

B. Cancer

c)

C. Sunburn

d)

D. Quick aging

16.

16. Which of the following is NOT the solution to ozone layer depletion?

a)

A. Use plastic bag as Eco-friendly Products

b)

B. Avoid Using Pesticides

c)

C. Minimize the Use of Vehicles

d)

D. Use of Nitrous Oxide should be prohibited

17.

17. This is a change in global or regional climate patterns, in particular, a change apparent from the mid to late 20th century onwards and attributed largely to the increased levels of atmospheric carbon dioxide produced by the use of fossil fuels.

a)

A. Global warming

b)

B. Ozone depletion

c)

C. Climate change

d)

D. Ozone layer

18.

18. This is emitted during agricultural and industrial activities, combustion of fossil fuels and solid waste, as well as during treatment of wastewater.

a)

A. Nitrous oxide

b)

B. Carbon dioxide

c)

B. Carbon dioxide

d)

D. Methane

19.

19. How long does it take for carbon dioxide in the atmosphere to disperse?

a)

A. 50 years

b)

B. 1 year

c)

C. 10 years

d)

D. 100 years

20.

20. Human extraction of fossil fuels brings carbon to Earth's surface where it can be _____?

a)

A. Extracted

b)

B. Combusted

c)

C. Erupted

d)

D. Breakdown

21.

21. This phenomenon is caused by algal blooms during which algae become so numerous that they discolor coastal waters.

a)

A. Water pollution

b)

B. Oil Spill

c)

C. Red Tide

d)

D. Air pollution

22.

22. The leakage of petroleum onto the surface of a large body of water.

a)

A. Oil spill

b)

B. Red Tide

c)

C. Water pollution

d)

D. Algal blooms

23.

23. Which of the following is NOT the source of water pollution?

a)

A. Agricultural

b)

B. Oil pollution

c)

C. Radioactive substances

d)

D. Burning of fossil fuels

24.

24. The following are the most common human health issues associated with red tide and other harmful algae blooms EXCEPT____________________.

a)

A. Respiratory

b)

B. Gastrointestinal

c)

C. Headache

d)

D. Neurological disorders

25.

25. This occurs when harmful substances, often chemicals or microorganism,s contaminate a stream, river, lake, ocean, aquifer, or other body of water, degrading water quality and rendering it toxic to humans or the environment.

a)

A. Red tide

b)

B. Oil spill

c)

C. Water pollution

d)

D. Algal blooms

26.

The Water Code of the Philippines adopts adequate measures to conserve and regulate water use in commercial, industrial, and residential areas.

a)

A. Presidential Decree 1067

b)

B. Presidential Decree 389

c)

C. Presidential Decree 984

d)

D. Presidential Decree 1181

27.

27. This is any pollution that emits radiation beyond what is naturally released by the environment. It’s generated by uranium mining, nuclear power plants, and the production and testing of military weapons, as well as by universities and hospitals that use radioactive materials for research and medicine.

a)

A. Nuclear waste

b)

B. Radioactive waste

c)

C. Water waste

d)

D. Sewage

28.

28. Most of the pollution in the ocean comes from _________________.

a)

A. Waste from the land

b)

B. Commercial boats

c)

C. Leaking tankers

d)

D. Oil spill

29.

29. This comes from our sinks, showers, and toilets (think sewage) and from commercial, industrial, and agricultural activities (think metals, solvents, and toxic sludge).

a)

A. Sewage and wastewater

b)

B. Oil spill

c)

C. Red tide

d)

D. Agricultural

30.

30. Water Pollution Control prohibits the discharge of oil, noxious liquid substances, and other harmful substances into the country’s inland and territorial waters.

a)

A. Presidential Decree 600 (amended by P.D. 979)

b)

B. Presidential Decree 1181- (supplements the provisions of P.D 984)

c)

C. Presidential Decree 1152-(Philippine Environmental policy)

d)

D. Presidential Decree 984

31.

31. Why are plastics difficult to recycle?

a)

A. Because it is very hard material

b)

B. Because it is very adhesive

c)

C. Because of different types of polymer resins

d)

D. Because of the different sizes of plastic

32.

32. How does organic material in the buried solid waste decompose?

a)

A. By the action of oxidation

b)

B. By the action of microorganisms

c)

C. By the flow of water

d)

D. By the soil particles

33.

33. This is the collecting, treating, and disposing of solid material discarded because it has served its purpose or is no longer useful.

a)

A. Solid

b)

B. Waste

c)

C. Recycle

d)

D. Solid waste management

34.

34. The Ecological Solid Waste Management Act provides for a systematic, comprehensive, and ecological waste management program to ensure the protection of public health and the environment.

a)

A. RA 9147

b)

B. RA 7586

c)

C. RA 9003

d)

D. RA 8749

35.

35. How long has garbage been around?

a)

A. As long as people have been on earth

b)

B. Forever

c)

C. 100 years

d)

D. 1000 years

36.

36. Recycling paper can save which natural resource?

a)

A. Rocks

b)

B. Trees

c)

C. Air

d)

D. Coal

37.

37. Which of the following is NOT a source of solid waste?

a)

A. Municipal solid waste

b)

B. Industrial solid waste

c)

C. Fertilizer

d)

D. Soil

38.

38. Accept recyclable materials from residential and commercial businesses that are already separated from solid waste.

a)

A. Clean MRFs

b)

B. Dirty MRFs

c)

C. MRF

d)

D. Solid waste

39.

39. Accept recyclable materials combined with municipal solid waste.

a)

A. Clean MRFs

b)

B. Dirty MRFs

c)

C. Solid waste

d)

D. MRF

40.

40. Which of the following can be recycled many times?

a)

A. Plastic

b)

B. Wood

c)

C. Organic material

d)

D. Aluminum

41.

41. Cyanide is another chemical known as the _____________.

a)

A. Deadliest poison

b)

B. Harmful

c)

C. Dangerous

d)

D. Damaging

42.

42. What Republic Act provides for a comprehensive air pollution control policy?

a)

A. Republic Act 716

b)

B. Republic Act 8749

c)

C. Republic Act 9147

d)

D. Republic Act 7586

43.

43. The discharge of warm water into a river is usually called a _____________________.

a)

A. Noise pollution

b)

B. Thermal Pollution

c)

C. Water pollution

d)

D. Air pollution

44.

44. This is waste material or impurity that poisons the air, water, and land.

a)

A. Water pollution

b)

B. Air pollution

c)

C. Pollution

d)

D. Thermal pollution

45.

45. Minerals are an important resource that comes from the earth. Which is NOT an example of a mineral?

a)

A. Copper

b)

B. Coal

c)

C. Iron

d)

D. Chlorophyll

46.

46. Which is a way we can protect our environment?

a)

A. Litter

b)

B. Pollute

c)

C. Recycle

d)

D. Contaminate

47.

47. These are minerals that have been formed in the lithosphere over millions of years and constitute a closed system.

a)

A. Renewable resources

b)

B. Non-renewable resources

c)

C. Hydropower

d)

D. Biomass

48.

48. This energy derived from the movement of water in rivers and oceans, originally used for irrigation and the operation of various mechanical devices, the term is used almost exclusively in conjunction with the modern development of hydroelectric power.

a)

A. Wind energy energy

b)

B. Solar

c)

C. Hydropower

d)

D. Electric energy

49.

49. This is the most abundant and easily available renewable resource.

a)

A. Solar energy

b)

B. Wind energy

c)

C. Windmill

d)

D. Hydropower

50.

50. Any undesirable effect caused to the environment due to radioactive substances or radiations is called ______________.

a)

A. Nuclear pollution

b)

B. Thermal Pollution

c)

C. Noise pollution

d)

D. Acid Rai n

HARMONIC AND OVERTONES

Total questions: 50

Worksheet time: 36mins

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