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






2. Symbol: C Protons: 6 Neutrons: 6 Mass: 12






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






4. 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






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






6. For a homogeneous object - density is determined by dividing the mass by the volume (D = M/V) The mass is normally measured with an appropriate scale or balance - The volume may be measured directly (from the geometry of the object) or by the displac






7. Scratch hardness - indentation hardness - and rebound hardness






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


9. 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


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






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






12. A water - soluble mixture of different dyes extracted from lichens - It is often absorbed onto filter paper






13. 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.






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






15. Energy can be neither created nor destroy






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






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






18. Metals account for the vast majority of the elements in the periodic table - Show a wide range of chemical and physical properties - Most metals are good conductors of heat and electricity - and some - like iron and cobalt - are magnetic - Many metal






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


20. 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)






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






22. 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






23. 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






24. 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






25. 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






26. 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






27. 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






28. Characterized by their ability to retain their shape - Relatively incompressible - Melt when heated and vaporize only slightly - All substances become solid if cooled sufficiently Examples: rocks - crystals - wood - feather - ice






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






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






31. 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






32. 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






33. Unlike incandescent lamps - fluorescent lamps always require a ______ to regulate the flow of power through the lamp






34. 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






35. Solids - liquids - and gases






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






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






38. 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






39. Obtained by two different means - fission and fusion






40. Salt has a ___________ than water and therefore doesn't evaporate with the water






41. Major greenhouse gases






42. 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






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






44. 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






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






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






47. 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






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






49. 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






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