CFU #3 Material Science

Which of the following is NOT a type of heat transfer?

• Convection

• Conduction

• Connection

• Radiation

Conduction is...

• The transfer of heat through the collision of molecules

• Electromagnetic waves

• Transfer of heat through the movement of fluids

• When a molecule is put under high pressure

In the video about plastic shapes under pressure, which shape was the strongest?

• The cylinder

• The pyramid

• The cube

• The sphere

Which liquid in our experiment caused the LEAST corrosion?

• Water

• Salt water

• Detergent

• Vinegar

Which of the following is an example of corrosion?

• Bread molding

• Wood decaying

• 
  Silver tarnishing

• Stone wearing down

Why do most modern houses have double paned windows?

• To prevent heat transfer through conduction

• To prevent heat transfer through convection

• To increase heat transfer through radiation

• To help support the house during an earthquake

If an item is more dense that water it will...

• float

• sink

• dissolve

• explode

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

• 7 mL
• 7 g/cm³
• 28 g/cm³
• 1/7 g/cm³

If an object has a density of .6 g/mL and you put it into water, will it sink or float?  

• sink
• float

Helium balloons rise on earth because

• helium is less dense than air
• helium is more dense than air
• helium is cooler than air
• helium is warmer than air