STEM 7 Final Assessment Practice Quiz

What is the most accurate measurement of the RED line?

• 3/4"
• 7/8"
• 1/2"
• 9/16"

What is the most accurate measurement of the GREEN line?

• 1/4"
• 1"
• 1/16"
• 5/16"

Which measurement tool is most appropriate to measure the height or the length of a room?

• Ruler
• Measurement wheel
• Laser

Which measurement tool is most appropriate to measure the street?

• Measurement tape
• Ruler
• Measurement wheel
• Laser

Which measurement tool is most appropriate to kitchen cabinets?

• Measurement tape
• Ruler
• Measurement wheel
• Laser

When an object is dropped, what will happen to its speed as it moves closer to Earth?

• The object's speed will increase as it falls towards the earth until the upward force of air resistance exactly balances the downward force due to the object's weight under gravity
• The object’s speed will increase as it falls towards the earth until its drag force exceeds (is larger than) its gravitational force.
• The object’s speed will decrease as it falls towards the earth until it reaches a terminal speed of zero.

Which is the best example of something that has kinetic energy?

• A car parked on a steep hill
• A tennis ball rolling across the court
• A picture hanging on the wall
• A piece of coal before it’s burned

What is the kinetic energy of a 20 kg roller coaster car moving at 5 m/sec?

• KE = 250 joules
• KE = 25 m/s
• KE = 12,500 joules
• KE = 0

There is a bell at the top of a tower that is 10m high (height). The bell weighs 10 kilograms. Calculate the bell’s Potential energy.

• PE = 500 Joules
• PE = 980 Joules
• PE = 49, 000 Joules
• PE = 0

​ (a)   is the force to be moved by a lever.

​

​ (b)   is a pivot or a point around which the lever turns.

​ ​ (c)   is effort that is applied to the lever.

• Load
• Fulcrum
• Force