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






2. 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






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






4. 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






5. 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






6. 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






7. 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






8. The earth's __________ orients the iron needles of navigational compasses






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






10. 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






11. Formed by the chemical combination of two or more elements in a fixed ratio Example: water






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






13. Symbol: U Protons: 92 Neutrons: 146 Mass: 238






14. 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.






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






16. 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






17. 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






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






19. Rates minerals and puts them on a scale from 1 to 10 (1 is the softest and 10 is the hardest) determined by the ability of a harder mineral to scratch a softer mineral - Talc is at 1 and diamond is at 10

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20. Obtained by two different means - fission and fusion






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






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






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






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






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






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






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






30. In physics and engineering - it means the strength of the gravitational pull on the object (how heavy it is - measured in newtons)






31. When the electrons flow in one direction - the flowing electricity is referred to as current - An electric current is simply a flow of electrons through a wire






32. Made by combining two or more different materials without a chemical reaction occurring (the objects do not bond together) - They are the product of a mechanical blending or mixing of chemical substances - Either homogeneous or heterogeneous






33. Form a question (state the problem) - A scientific question is one that can be answered on the basis of evidence and that can be measured - The question often asks - 'What effect will something have






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






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

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36. Arranges all of the known elements from left to right and top to bottom in order of increasing atomic number - and they generally coincide with their increasing atomic mass






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






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






39. Temperature scale -0






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






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






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






43. Symbol: He Protons: 2 Neutrons: 2 Mass: 4






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






45. 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






46. A wave's height - the distance between its resting position and its crest






47. Heat tends to move from a high - temperature region to a low- temperature region - This heat transfer may occur by the mechanisms of conduction - radiation - and convection






48. 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






49. A mechanical device that changes the direction or magnitude of a force - The simplest mechanisms that use mechanical advantage to multiply force - Uses a single applied force to do work against a single load force






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

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