Thermo Review

Hot coffee is stirred with a spoon; the spoon gets hot due to

• conduction
• convection
• radiation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

"Lava lamps" contain colored liquids. These liquids form globs that rise to the top due to

• conduction
• convection
• radiation

Tags

NGSS.MS-PS1-4

In a swimming pool, water near the surface is slightly warmer. The warm water rises because of

• conduction
• convection
• radiation

A huge rock at the state park gets hot during the day. The rock was warmed from the Sun by

• conduction
• convection
• radiation

Tags

NGSS.MS-PS3-3

You lay on the same hot rock at night and keep warm from the rock by

• conduction
• convection
• radiation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Consider 2 blocks of Aluminium (one of 1kg and one of 10 kg) and being supplied with thermal energy.

Which one heats up the fastest?

• 1 kg

• 10 kg

• They both heat up at the same rate

• They don't heat up.

The specific heat(c) of copper is 0.39 Jg^-1K^-1. What is the temperature change(∆T) when 100 Joules of heat(Q) is added to 20 grams?

• 12.82 °C

• 24.12°C

• 351 °C

What is temperature a measure of?

• total kinetic energy in a substance
• total energy in a substance
• average molecular kinetic energy in a substance.
• average energy in a substance.

What is thermal equilibrium?

• When two objects are at rest at the same time.
• When two or more objects reach a common temperature.
• When two objects have the same specific heat.

Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using the same thermal energy.  What material would be the coolest after being heated?

• Copper
• Carbon Steel
• Zinc
• Stainless Steel

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4