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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. Transferring of heat by the circulating motion of particles (in liquid or gas) - Occurs when hot air is less dense than cool air and therefore rises - When the heat moves in a circular pattern - convection currents are formed - Heat can be transferre






2. A form of energy that can be used to produce sound - light - heat - and power - it exists where the number of negative electrons does not precisely equal the number of positive protons - Electrons are held in the atom by an electrical force and have






3. State the specific plan on how to test the hypothesis - Create a written - step - by - step procedure - Determine the variables (any factor that can change in an experiment)






4. Multiply force but do not change the direction of the input force End: Fulcrum Middle: Output force Other end: Input force Examples: wheelbarrows - baby strollers - bottle openers






5. The rate of change of velocity with time a = ?v/?t (acceleration = change of velocity/change of time)






6. Releases energy when a heavy nucleus splits into smaller fragments - Used in power plants and atomic bombs






7. When foreign substances are dissolved in water it creates a solution - Solutions with a pH of less than 7.0 are said to be acidic - and solutions with a pH greater than 7.0 are said to be basic or alkaline






8. Opposite process of nuclear fission - Yields energy when very light nuclei unite to a heavier nucleus - Stars (including the sun) derive their energy from nuclear fusion






9. If the pressure increases - the volume decreases; the reverse is true as well

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






11. The particular state of water is determined by ___________ - the behavior of water at one atmosphere (sea level) - freezing at 0






12. 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






13. Example of chemical change - Iron chemically reacts with air and water to form rust (ferrous oxide) and is unable to change back to iron






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






15. Glass has a higher ___________ than air and the different frequencies of light have different wavelengths (dispersion) - causing them to be refracted at different angles - so that you can see them - The different frequencies correspond to different c






16. Designed to separate substances in a liquid through vaporization - Usually carried out in an apparatus called a still - which requires a boiler - a condenser - and a receiver Example: Purify ocean water






17. Resistance to plastic (permanent) deformation due to a constant load from a sharp object






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






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






20. A difference between two temperatures or an uncertainty






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






22. Mechanical advantage of an inclined plane is the ______________ it spans - The inclined plane allows the same work to be done with a smaller force exerted over a greater distance Example: ramp






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. Seems to travel in perfectly straight lines as rays - The direction of a ray changes at the interface between two transparent materials - like air and water






25. Involve one substance changing states (not one substance changing into another) - Typically reversible Example: water - Can change from a gas (water vapor) to a liquid (water) to a solid (ice) - but the water molecules do not change






26. Scratch hardness - indentation hardness - and rebound hardness






27. Symbol: O Protons: 8 Neutrons: 8 Mass: 16






28. Displayed by permanent magnets and around electric currents






29. The terms gravitation and gravity are mostly interchangeable in everyday use - refers specifically to the gravitational force exerted by the earth on objects in its vicinity






30. The distance between two consecutive points on a wave (crest to crest)






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






32. Protons have a __________ electrical charge - and neutrons have no charge






33. 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






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






35. A temperature interval of one degree F is an interval of 5/9 of a degree C - The Fahrenheit and Celsius scales coincide at -40






36. The path or circuit an electric current flows - Electricity requires a complete path for the electrons to flow - If the path is broken and there are not alternative paths for the electrons to follow - the electrons will not move - make it possible fo






37. The branches of natural sciences that study the nature and properties of energy and non - living matter






38. This is the one factor that will be intentionally changed during the experiment. Examples include changing the amount of salt that is added to water to determine its freezing point; introducing different soil types in germinating seeds; and changing






39. A natural phenomenon by which objects with mass attract one another - Compels dispersed matter to coalesce - and thus it accounts for the very existence of the earth - the sun - and most of the macroscopic objects in the universe - Responsible for ke






40. The north pole of one magnet attracts the ___________ of another - but like poles repel each other - Either pole can attract unmagnetized iron objects






41. The ratio of the output to the input force - Also called leverage - Results in less force applied over a greater distance - Helps to make work easier






42. In everyday situations - the weight of an object is ____________ - which usually makes it acceptable to use the same word for both concepts






43. 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






44. A compound and portable inclined plane - A triangular - shaped tool used to separate two objects or portions of an object - lift an object - or hold an object in place - It functions by converting a force applied to its blunt end into forces perpendi






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

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46. The number of protons of that element - No two elements have the same atomic number - Elements in the periodic table are arranged in order of increasing atomic number






47. Top: Output force (resistance) Middle: Input force (effort) End: Fulcrum Examples: baseball bat - fishing pole - shovel






48. Are inclined planes - Can convert a rotational force (torque) to a linear force - and vice versa - The ratio of threading determines the mechanical advantage of the machine - More threading increases the mechanical advantage






49. Known as insulators - In materials that act as insulators - the electrons are held tightly inside their atoms and the electrons cannot move freely - Include plastic - rubber - glass - air - and wood






50. These are the factors that are kept exactly the same in an experiment. In an experiment on plant growth - the variables could include amount of sunlight - type of soil - amount of water - and type of plant. Only one factor at a time is changed - whil






Can you answer 50 questions in 15 minutes?



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