Principles of Technology - Semester Exam Review Key
|Pointed away from yourself and others||The correct way to hold a test tube while heating its contents is|
|tied back|| You are going to be working with different chemicals and the Bunsen Burner during |
the lab tomorrow. Your long hair will needs to be
|Inform the teacher and follow his/her instructions||If you smell a gas leak in the laboratory, you should|
|Dispose of materials according to your teacher's instructions, wipe up your work area, wash your hands, and return to your seat to complete your conclusions||After you've completed your lab activity, you should|
|Goggles are required when working with||fire, chemicals, hot plate, or glassware.|
|You have a beaker of sulfuric acid and wonder what it smells like. You should||Inform the teacher and follow his/her instruction about how to test the odor|
|1 mL||When measuring a liquid's volume which will give greater precision a graduated cylinder with increments of 1 mL or increments of 2 mL?|
|Increase in growth, speed,||Which of these can be tested through experimentation?|
The graph shows the distance traveled by a vehicle over a certain period of time.
Which segment of the graph shows the vehicle moving with the greatest speed,
stopped, and the slowest speed?
|How the type of material affects rebound height|| |
In an activity, a ball is dropped from a height of 100 cm onto five different materials.
The rebound height of each drop is shown in the graph. What is the hypothesis that
is most likely being tested?
|2.4g||1 gram equals 1000 milligrams. How many grams equal 2400 milligrams?|
|.750L||A coke has 750mL of liquid in it. What is this in liters?|
|independent||The variable that is always plotted on the X-axis is the|
|dependent||The variable that is always plotted on the Y-axis is the|
|procedure||The steps used to conduct an experiment are called|
|mechanical system||uses gears, chains, levers, to transmit forces.|
|force||is a push or a pull.|
|Newton|| is the amount of force required to give a 1-kg mass an |
acceleration of 1 m/s2.
|Weight||is the force caused by the Earth's gravity and is directed downward.|
|Weight||depends on location above the earth's center.|
|Mass||is the amount of matter in an object.|
|Vectors||have both direction and magnitude and are drawn as arrows.|
|Balanced||forces are EQUAL and OPPOSITE in direction.|
|Magnitude||is the numerical value of a vector.|
|Unbalanced|| forces are not equal and will cause a change in the |
motion of an object.
|Equilibrium||is when all the forces are balanced on an object.|