RECF practice questions with 100% correct answers

RECF practice questions with 100% correct answers What has the highest strength to weight ratio? - Answer️️ -Carbon Fiber According to the U.S. Dept. of commerce between 2008 and 2018 U.S. STEM jobs are predicted to grow by __ % compared to a growth rate estimated of just under 10 % for non-STEM jobs. - Answer️️ -17% Which of the following engineers work to create roads bridges and tunnels? - Answer️️ -Civil Engineers The difference between hardwood and softwood is - Answer️️ -Hardwoods (Have leaves) are from deciduous trees, softwoods (Have needles) are from coniferous trees Quality Control inspects materials during the manufacturing process to - Answer️️ - ensure that each material has the correct characteristics Composite materials have revolutionized which industry? - Answer️️ -Aerospace what are the five largest fields of engineering? - Answer️️ -Chemical, industrial, electrical, mechanical, civil Another good way to describe engineering is simply saying that engineering is - Answer️️ -Problem Solving Select the best definition for what engineering is: - Answer️️ -the Use of tools and materials to create things to solve problems for man Mercury is known in space history as - Answer️️ -the first US manned rocket system Neil Armstrong - Answer️️ -Was the first man to walk on the moon Alan Shepard - Answer️️ -Was the first American in Space It took Apollo 11 how long to fly to the moon? - Answer️️ -3 days The space shuttle has flown to the moon how many times? - Answer️️ -0 First Lunar Lander that landed on the moon - Answer️️ -Eagle First spacecraft that landed on mars - Answer️️ -Pathfinder 1997 Largest rocket ever built - Answer️️ -Saturn V The first spacecraft on the moon was: - Answer️️ -1959 Copper and Zinc mixed together make an alloy we know as: - Answer️️ -Brass Material that makes stainless steel rust resistant? - Answer️️ -Chromium Most common construction materials are: - Answer️️ -Dimensional Lumber What does the number on the recycling symbol on the bottom of a plastic container indicate? - Answer️️ -Resin Type Ferrous metals are easy detectable with: - Answer️️ -Magnets Alloys are: - Answer️️ -A mixture of 2 or more metals to create a metal with different properties Quenching, dipping heated metals in oil or water, can change the: - Answer️️ - hardness of the metal Pine, fir and oak are all: - Answer️️ -Softwoods What is NOT characteristic of plastics that makes it a good material for manufacturing parts? - Answer️️ -conductive Which of the following are examples of ferrous metals? - Answer️️ -Cold rolled steel, iron and stainless steel Graphite is a main component in many - Answer️️ -Composites Examples of precious metals: - Answer️️ -Platinum, gold an