Heat Transfer Question Preview (ID: 49382)


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How does a greenhouse help a gardener grow plants during a cool season?
a) The glass transmits light into the greenhouse but it slows the transfer of thermal energy out of the greenhouse.
b) The glass panels transfer thermal energy into the greenhouse but they do not transfer thermal energy out.
c) The greenhouse converts light energy into thermal energy so the plants grow faster.
d) The glass blocks the flow of all types of energy into or out of the greenhouse.

Anya placed an ice cube on the sidewalk on a warm day. The ice cube soon melted to form a puddle. What process caused the ice cube to melt?
a) Heat transferred through the ice cube by convection.
b) Heat transferred from the air to the ice cube by radiation.
c) Heat transferred from the air and the pavement by conduction
d) Heat transferred through the ice cube into the pavement by conduction.

A dark-colored wall becomes warm when the sun shines on it. After sunset, a person standing a meter away can feel warmth from the wall. How does heat transfer from the wall to the person?
a) radiation
b) conduction
c) convection
d) insulation

A small ice cube at a temperature of 0°C is dropped into a glass of water at 28°C and melts. What is the temperature of the water in the glass just after the ice cube melts?
a) 0°C
b) between 0°C and 28°C
c) 28°C
d) greater than 28°C

What conditions are necessary for heat conduction to occur between two objects?
a) The objects must be surrounded by air or water
b) Two objects at different temperatures are touching one another.
c) Two objects at different temperatures are located close to one another.
d) One object must emit energy as light and heat and another object absorbs the energy.

What causes your skin to feel warm when it is in the sun on a summer day?
a) Particles in the atmosphere reflect energy from the Sun downward
b) Hot particles from the Sun still carry some heat when they reach your skin.
c) The solar wind carries heated air from the Sun’s atmosphere to Earth’s surface.
d) The Sun radiates energy that passes through space and the atmosphere to your skin.

What is the original source of most of the energy that people use?
a) Energy that reaches Earth’s surface by radiation from the Sun.
b) Energy that reaches Earth’s surface by convection from the Sun.
c) Energy that reaches Earth’s surface by radiation from Earth’s core.
d) Energy that reaches Earth’s surface by conduction from Earth’s core.

Kayla has a wooden rod, a steel rod, and a glass rod. How could she compare the materials to find out which transfers thermal energy BEST?
a) Submerge each rod in ice water to find out which loses the most heat.
b) Place the three rods in a freezer to find out which becomes the coldest.
c) Place one end of each rod in very hot water to find out which becomes hot the fastest.
d) Place the rods on a table in a warm room and find out which feels warmest after a period of time.

Bill stands in a swimming pool and notices that the water around his feet is a lot cooler than the water near the surface. Which process causes this difference in temperature?
a) convection
b) evaporation
c) radiation
d) conduction

People sitting around a campfire are able to feel the heat from the fire. How are the people able to feel the heat from the fire without touching the fire?
a) The heat from the fire travels through the ground and heats the ground around the people.
b) The heat from the fire is conducted through air molecules to the people.
c) The heat from the fire rises in the air and then settles around the people.
d) The heat from the fire radiates from the fire to the people.

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