THERMAL ENERGY CALCULATIONS

What kind of energy does a marble at the top of a hill have?

• gravitational potential

• chemical potential

• kinetic

• thermal

Tags

NGSS.MS-PS3-2

What is the equation for gravitational potential energy

• mv

• 1/2 mv^2

• mgh

• Ft

Tags

NGSS.MS-PS3-2

What is the correct unit for energy?

• meters (m)

• kilogram meters per second (kg m/s)

• Newtons (N)

• Joules (J)

When you measure the temperature of hot soup, you are measuring the:

• thermal energy given off by the bowl
• specific heat of the bowl
• average kinetic energy of the particles in the soup
• thermal expansion of the particles in the soup

The symbol for specific heat is .......

• c
• Q
• m
• t

What  is the formula to calculate heat energy required to raise the temperature of any substance?

• Q=mc∆t
• Q=mc
• Q= ½mv
• m=QC

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. Calculate the specific heat capacity of iron.

• 0.46 J/g^oC

• 1.654 J/g^oC

• 2,567,446.875 J/g^oC

How many joules of heat are needed to raise the temperature of 10.0 g of aluminum from 22.0°C to 55.0°C, if the specific heat of aluminum is 0.903 J/g°C?

• 298 Joules

• 0.003 Joules

• 297 J/g°C

• 0.003 J/g°C

A 300.0 g piece of copper is heated and fashioned into a bracelet. The amount of energy transferred by heat to the copper is 66,300 J. If the specific heat of copper is 0.3845 J/g ⁰C, what is the change of the copper's temperature?

• 641 °C

• 7,650,000 Joules

The specific heat of aluminum is 0.9025 J/g°C. How much heat(Q) is released when a 10.0 g piece of aluminum foil is taken out of the oven and cools from 100.0° to 50.0°?

• 451 J

• 45.1 J

• 400 J