Gizmo Conduction vs Convection

Which set of flasks will change temperature most quickly?

• Set A (solid gold chunk between flasks)
• Set B (solid stone chunk between flasks)
• Set C (solid glass chunk between flasks)
• Set D (solid rubber chunk between flasks)

Tags

NGSS.MS-PS3-3

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A chef leaves a copper spoon, a wooden spoon, and a steel spoon in a pot of boiling soup for several minutes. Which spoon should the chef grab with his bare hand to stir the soup?

• The copper spoon
• The wooden spoon
• The steel spoon
• The three spoons will be equally hot.

Tags

NGSS.MS-PS3-3

Two sets of flasks are connected by a hollow copper pipe, as shown. Which set will change temperature most quickly?

• Set A (cold water above, hot water below)
•  Set B (hot water above, cold water below)
• The temperatures will change at the same rate in each set.
• More information is needed.

Tags

NGSS.MS-PS3-3

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A hot sun warms the surface of a lake on a calm day. What will happen to the cold water at the bottom of the lake?

• The cold water at the bottom will rise up and mix with the warm water at the top
• The warm water at the top will sink down and mix with the cold water at the bottom.
• The cold water will remain at the bottom and will not mix with the warm water at the top.
• Both A and B are true.

Tags

NGSS.MS-PS1-4

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Insulators prevent the loss of heat. A company is designing a mug that will keep coffee warm for a long time. Which one of these materials would do this best?

•  Copper
• Steel
• Lead
• Rubber

Tags

NGSS.MS-PS3-3