Temperature and Calor

The water in Mario’s swimming pool absorbs energy as heat during the day. Which of the following would the water in the pool be most likely to do?

• condense

• evaporate

• freeze

• melt

During the summer, Chang takes a glass of milk from the refrigerator and places it on the kitchen counter. Over time, energy as heat is transferred to the milk from the air. Which change would most likely occur?

• The temperature of the milk will increase.

• The temperature of the milk will decrease.

• The milk will change from a liquid to a gas.

• The milk will change from a liquid to a solid.

How is temperature related to heat?

• Temperature is a measure of the heat of an object.

• Heat causes a change in the temperature of an object.

• Raising the temperature causes the heat of an object to increase.

• Temperature and heat are two different ways to measure the same thing.

Emerson places a beaker of water on a hotplate and turns the hotplate on. The temperature in the room is 25 ºC. After the water heats to 75 ºC, she adds pieces of ice to the beaker.

Which of the following describes a transfer of heat energy that occurs during this experiment?

• from the air to the water

• from the ice to the beaker

• from the water to the ice

• from the water to the hotplate

A metal length of 20 cm with a metal expansion coefficient is 10^-4/⁰C. If the metal is heated from 30 ⁰C to 80 ⁰C, then the length of the metal is ... cm

• 0.001

• 0.01

• 0.1

• 1

• 10

A room has a temperature of 84⁰R. If it converted in celcius, the value became....⁰C

• 89

• 105

• 128

• 135

• 140

10 grams of ice at a temperature of 0C was given as much heat as 1200 cal. If the heat of melting ice = 80 cal / gr then the water that occurs has a temperature .....⁰C

• 0

• 10

• 20

• 40

• 100

Two metal bars of A and B cross-section are 2: 1, while the length is 4: 1. When the temperature of the ends of the two stems is the same then the amount of propagation per unit time at A and compared to B is ....

• 2:1

• 1:2

• 8:3

• 3:8

• 1:1

pieces of aluminum 200 grams with the temperature of 20 ⁰C inserted into water 100 grams of 80 ⁰C. If you know the aluminum heat type 0.22 cal / gram ⁰C and heat type water 1 cal / gram ⁰C. Then the final temperature of aluminum and water approaches ... ⁰C

• 20

• 42

• 62

• 80

• 100

if a bottle is able to hold 50000 cm³ at a temperature of 15⁰ C, what is the capacity at 25⁰ C for the coefficient of expansion of the material length of the bottle 8.3 x 10^-6 / ⁰C ... cm³

• 10.012

• 20.012

• 30.012

• 40.012

• 50.012