AnswersTwilight Session 1 Fall 26 Spanish I_Faria PoliteShopping Part 2

Shopping Part 3 Answers

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Which best illustrates the way in which radiation transfers thermal energy?

A
A red ball at left labeled warm does not touch a blue ball labeled cool at right. Curved arrows point from the blue ball to the red ball.
Option A
B
A red ball at left labeled warm does not touch a blue ball labeled cool at right. Curved arrows point from the red ball to the blue ball.
Option B
C
A red ball at left labeled warm touches a blue ball labeled cool at right. Straight arrows point from the blue ball to the red ball.
Option C
D
A red ball at left labeled warm touches a blue ball labeled cool at right. Straight arrows point from the red ball to the blue ball.
Option D
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Sayid recorded the temperatures of four substances in a chart.

Question illustration
A
The particles in substance W have a greater average kinetic energy than the particles in substance Z.
B
The particles in substance X have a greater average kinetic energy than the particles in substance Z.
C
The particles in substance W have a lower average kinetic energy than the particles in substance X.
D
The particles in substance Z have a lower average kinetic energy than the particles in substance Y.
123

Heat is most closely related to which kind of energy?

A
nuclear
B
electrical
C
thermal
D
chemical
124

Earl is using his hands to hold a metal pan 10 centimeters above a hot burner. How can this scenario be changed to demonstrate conduction between the pan and the burner?

A
increase the temperature of the burner
B
use a glass pan instead of a metal pan
C
use foam potholders to hold the pan
D
touch the pan to the burner
125

Water is boiling in a clear pot, as shown in the picture.

Question illustration
A
They are more spread out and moving faster than those at the surface.
B
They are closer together and moving faster than those at the surface.
C
They are more spread out and moving slower than those at the surface.
D
They are closer together and moving slower than those at the surface.
126

Car manufacturers use radiation for which task?

A
sealing windows
B
drying paint
C
cleaning tires
D
lubricating engines
127

Hot coffee in a mug cools over time and the mug warms up. Which describes the energy in this system?

A
The average kinetic energy of the particles in the mug decreases.
B
The average kinetic energy of the particles in the coffee increases.
C
Thermal energy from the mug is transferred to the coffee.
D
Thermal energy from the coffee is transferred to the mug.
128

Which substance is most likely to heat up the fastest?

A
water (specific heat of 4.19 J/g • C°)
B
copper (specific heat of 0.39 J/g • C°)
C
aluminum (specific heat of 0.90 J/g • C°)
D
dry air (specific heat of 1.01 J/g • C°)
129

Which explains why conduction is unlikely when ice is placed on a freezer shelf?

A
There is no direct contact.
B
The ice is too cold.
C
The shelf acts as an insulator.
D
The ice and shelf are the same temperature.
130

A student places a large pot of cold water on a stove and heats it for one minute. Then she takes the pot of water off the burner and places it on the counter. Which best describes the convection currents?

A
Convection currents move thermal energy from the stove to the pot, and then from the pot to the water.
B
After the stove is turned off, convection currents continue to transfer energy through the water for a period of time.
C
Convection currents in the water cause warmer, denser water to rise and transfer energy upward.
D
When the stove is turned on, convection currents cause an increase in the chemical energy of water molecules.
131

Which refers to a material that causes a wave to bounce off of it?

A
absorber
B
reflector
C
conductor
D
insulator
132

Which is equal to a temperature of 50°F?

A
18°C
B
46°C
C
10°C
D
32°C
133

What must be true about two objects if heat is flowing between them?

A
The objects must be different temperatures.
B
The objects must be the same temperature.
C
The objects must both be over room temperature.
D
The objects must both be under room temperature.
134

Keesha conducts an experiment by pouring equal amounts of boiling water into four containers. The containers are the same size and shape, but they are made of different materials. The chart lists the containers according to their materials.Using protective gloves, Keesha carefully touches each container immediately after pouring the water. Which container was likely the hottest?

Question illustration
A
W
B
X
C
Y
D
Z
135

Which best describes the convection currents in Earth’s mantle?

A
They transfer potential energy away from Earth’s core toward its crust.
B
They transfer thermal energy away from Earth’s core toward its crust.
C
They transfer chemical and thermal energy in a circular pattern.
D
They transfer chemical and potential energy in a circular pattern.
136

How does radiation help treat cancer?

A
It cools down the cancer cells and weakens them.
B
It cools down the non-cancerous cells and strengthens them.
C
It heats up the cancer cells and weakens them.
D
It heats up the non-cancerous cells and strengthens them.
137

What is the temperature, in degrees Celsius, of a substance with a temperature of 49K?

A
–322°C
B
–224°C
C
224°C
D
322°C
138

If a cup of coffee is at 90°C and a person with a body temperature of 36°C touches it, how will heat flow between them?

A
from the hand to the cup
B
from the cup to the hand
C
from the cup to the surrounding air
D
from the hand to surrounding air
139

What must be true about two objects for conduction to take place?

A
The objects must be different temperatures and they must be in contact.
B
The objects must be the same temperature and they must be in contact.
C
The objects must be different temperatures and they must be insulators.
D
The objects must be the same temperature and they must be insulators.
140

Yami pours powdered cocoa mix into milk and stirs it. Then she microwaves the mixture for three minutes. When she takes the cup out, the handle is very warm. Steam rises from the cup, so she blows it before taking a sip. In which part of this scenario can convection be best observed?

A
stirring powdered cocoa mix into milk
B
touching the warm handle of the cup
C
rising steam from the cup of cocoa
D
pouring the cocoa mix into the milk

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