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CSET Physical Science 3

Subjects : cset, science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A source of electric light that works by incandescence - An electric current passes through a thin filament - heating it until it produces light - The enclosing glass bulb prevents the oxygen in the air from reaching the hot filament - which otherwis






2. A first - class lever - In its simplest form it consists of a rod attached to a wheel so that their movements are coupled when one of the parts is turned






3. Composed of only one atom and cannot be separated into different substances except in some instances by radioactive decay or by nuclear reactions






4. Elements are assigned atomic numbers equal to the __________ in the nucleus of their atoms - Each element has a different number of protons






5. Energy taken from finite resources that will eventually dwindle - becoming too expensive or too environmentally damaging to retrieve - Fossil fuels include coal - petroleum - and natural gas - Fossil fuels are limited and nonrenewable and contribute






6. The sum of the protons and neutrons gives an ______________ for the element






7. Take on the shape of their containers - yet cannot be compressed to any significant extent - The volume is constant unless evaporation is occurring






8. The pitch of a sound depends on how fast the particles of a medium vibrate






9. A hypothesis is an attempt to answer the question or predict the outcome - - A hypothesis is a possible explanation for a set of observations






10. A compressed gas pushes out __________ in all directions






11. Also generates a magnetic field - demonstrating an intimate connection between electricity and magnetism






12. The beginning of scientific wisdom - The physicist's first reaction to a new idea is to ask: Can it be measured? Can I describe it with numbers?






13. Resistance to fracture or plastic (permanent) deformation due to friction from a sharp object






14. A gas - discharge lamp that uses electricity to excite mercury vapor - The excited mercury atoms produce short - wave ultraviolet light that then causes a phosphor to fluoresce - producing visible light






15. Atoms are made up of several tiny parts - At the center of an atom is a core called the __________ - which is made up of particles called protons and neutrons






16. Height of the bounce of an object dropped o the material - related to elasticity






17. Occurs when light travels only in straight lines - An object is visible because light is reflected from the object into our eyes






18. For smooth surfaces - the angle at which light is incident on the surface equals the angle at which it is reflected






19. The shortest wavelength; red is the longest






20. The top of a wave's 'hill'






21. The mechanical advantage of a wedge is given by the ______________________ - Although a short wedge with a wide angle may do a job faster - it requires more force than a long wedge with a narrow angle






22. Some of the light is reflected - the angle of reflection being equal to the...






23. Other indicators of the ________ of an acid are that when acids react with metals - hydrogen gas is released causing bases to feel soapy when touched






24. Symbol: H Protons: 1 Neutrons: 0 Mass: 1






25. Some gases can transition directly to a solid Example: the formation of frost






26. The amount of matter in a chemical substance - In everyday usage - is commonly confused with weight






27. A conclusion is a summary and an explanation of the results of an experiment - Does the data support the hypothesis? If not - a new hypothesis can be formed






28. List the specific materials to be used in the experiment - This allows for replication of the experiment






29. In each element's square - the ________ is in the middle - the atomic weight is usually directly below the symbol - the atomic number is usually shown at the top of the square






30. The portion of the light that crosses the boundary is - however - deflected in another direction - and the ______ does not equal the angle of incidence






31. A rigid object that is used with an appropriate fulcrum or pivot point to multiply the mechanical force that can be applied to another object - Examples: wheelbarrow (the wheel works as the fulcrum) - scissors (the fulcrum is where the blades cross)






32. Temperature scale named after the German physicist Daniel Gabriel Fahrenheit (1686-1736) - who proposed it in 1724 - On this scale - the freezing point of water is 32






33. Heat can be converted to motion - and motion can produce heat






34. Relies on the the first law - The acceleration of an object is proportional to the force applied (the more force - the more acceleration)

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35. A flat surface whose endpoints are at different heights - resulting in a slope - By moving an object up an ___________ rather than completely vertically - the amount of force required is reduced - at the expense of increasing the distance the object






36. The burning of coal also contributes to the formation of...






37. Major greenhouse gases






38. Explains why objects appear bent as light passes from one transparent object into another - Light travels at different speeds through different objects (faster through air than through water or glass) - Responsible for rainbows and for the splitting






39. As temperature increases (at a fixed pressure) - so does volume Examples: air - helium - steam

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40. Solar - Chemical - Electrical - Magnetic - Nuclear - Sound - Light - Electromagnetic - Mechanical (motion)






41. Electricity flows easily through materials that conduct electricity - Include metals such as aluminum (Al) - iron (Fe) - nickel (Ni) - silver (Ag) - and gold (Au)






42. Show the number of molecules or formula units of the reactants and products - Example: nitrous oxide is a colorless - odorless gas that causes mild hysteria when inhaled - hence the name laughing gas; it is prepared by heating ammonium nitrate crysta






43. The rate of change of position with time v = ?d/?t (velocity = change of distance/change of time)






44. This is the variable that changes as a result of the manipulated variable. The dependent variable is observed and measured. Examples include determining how long various saltwater solutions take to freeze - and determining the number of cycles a pend






45. Energy generated from natural sources (such as sunlight - wind - rain - tides - and geothermal heat) which are renewable (naturally replenished)






46. Scratch hardness - indentation hardness - and rebound hardness






47. The resulting piece of paper or solution with water becomes a ________ (one of the oldest) - used to test materials for acidity






48. A compound composed of one atom of sodium and one atom of chlorine (NaCl - sodium chloride)






49. Refers to various properties of matter in the solid phase that give it a high resistance to its shape changing when force is applied






50. The ability to perform work - _______ transformations result when a change of form takes place - All forms of ________ can be converted into other forms