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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 difference between two temperatures or an uncertainty






2. A grooved wheel with a rope or other item wrapped around it - used to change the direction of an applied force - change the amount of force - transmit rotational motion - or realize a mechanical advantage in either a linear or a rotational system of






3. The law of inertia - Without outside forces (such as gravity or friction) - an object at rest will remain at rest - while an object in motion will never stop or deviate from its course

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4. Makes it possible for some elements and compounds to transition from a solid to gas phase without becoming a liquid Example: a block of dry ice (CO2) - which will turn into a gas at room temperature






5. Obtained by two different means - fission and fusion






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






7. The liquid state is __________ between the solid and gaseous states with regard to molecular motion and attractive forces between molecules Examples: water - oil - milk - honey






8. A degree on the Fahrenheit scale is 1/180th of the interval between the __________ and boiling point






9. 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






10. 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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11. 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






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






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

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






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






16. 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






17. The characteristics that makes up the physical composition of a substance - Include color - form - electrical conductivity - and density






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






19. In optics - refraction occurs when light waves travel from a medium with a given refractive index to a medium with another index Example: A ray of light will refract as it enters and leaves glass - assuming there is a change in the refractive index.






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






21. 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






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






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






24. Displayed by permanent magnets and around electric currents






25. Results when electrical charges buildup or increase on the surface of a material - here - there is no current flowing as would be found in electrical outlets - When certain materials are rubbed together - electrons can move from one object to the oth






26. 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)






27. A compressed gas pushes out __________ in all directions






28. Symbol: Fe Protons: 26 Neutrons: 30 Mass 56






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






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






31. 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






32. For every action (applied force) - there is an equal and opposite reaction

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33. Can multiply force or distance depending on the location of the fulcrum End: Output force Middle: Fulcrum Other end: Input force Examples: seesaws - scissors - pliers






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






35. 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)






36. 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






37. Anything that has mass and occupies space - Everything you see and touch is composed of matter






38. Account for 17 elements in the periodic table - Lack the properties of metals but are very common - Include oxygen - nitrogen - and carbon - 7 metalloid elements - and 7 gases - Poor conductors of electricity






39. Expand to fill any available space - a compressible fluid - with its volume determined by the pressure and temperature of the environment






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






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






42. Temperature scale -0






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






44. Made up of molecules with the composition H20 - One _____ molecule is built from two atoms of hydrogen and one atom of oxygen






45. Transition of heat through a medium - From a region of higher temperature to a region of lower temperature - Heat energy is transferred from one material to another by direct contact - Metals are good conductors of heat






46. Lever - Pulley - Inclined plane - Screw - Wedge - Wheel and axle






47. 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






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






49. Solids - liquids - and gases






50. Major greenhouse gases