# Energy 2: Question Preview (ID: 24846)

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Metal block A has a temperature of 25 degrees Celcius, while metal block B has a temperature of 17 degrees Celcius. How is energy transferred when both blocks come in contact with each other?
a) Block A temperature increases, block B temperature decreases.
b) Block A temperature increases, block B temperature increases.
c) Block A temperature decreases, block B temperature increases
d) Block A temperature decreases, block B temperature decreases.

A silver spoon at a temperature of 23 degrees Celcius is placed in a cup of water at 85 degrees Celsius. What will happen to the temperatures of these two substances over time?
a) The temperature of the spoon and the water will decrease.
b) The temperature of the spoon and the water will increase.
c) The temperature of the spoon will decrease and that of the water will increase.
d) The temperature of the spoon will increase and that of the water will decrease.

A piece of hot iron is placed in a beaker of ice water. If enough time goes by, which statement best describes the temperatures of the two substances?
a) The iron will be cold, and the water will be hot.
b) The iron will still be hot, the water will still be cold.
c) Both substances' temperatures stay the same.
d) Both substances' temperatures will be between the starting temperatures.

What happens to some of the energy when a lamp is turned on?
a) Some energy is created
b) Some energy is detroyed
c) Some energy is changed to heat.
d) Some energy is changed to matter.

Which scientific law describes what happens to the total amount of energy in a closed system?
a) Law of Transformation of Energy
b) Law of Conservation of Energy
c) Law of Absorption of Energy
d) Law of Creation of Energy

When a ball rolls across a gym floor is will slow down and eventually stop. What happens to the total amount of energy in the system?
a) total amount of energy increases
b) total amount of energy decreases
c) total amount of energy stays the same
d) total amount of energy constantly changes

Which object transfers electrical energy to mechanical energy and heat?
a) computer
b) flashlight
c) hair dryer
d) oven

How does energy transfer when a lamp is turned on?
a) electrical energy to light energy
b) electrical energy to sound energy
c) electrical energy to chemical energy
d) electrical energy to electrical energy

Which makes the metal spoon appear broken when placed in a clear glass of water?
a) Absorption
b) Convection
c) Reflection
d) Refraction

Why does a student see her image in a glass window on a sunny day?
a) some of the light is passed through the glass
b) some of the light is separated by the glass
c) some of the light is absorbed by the glass
d) some of the light is reflected off the glass

What can happen when light strikes a surface?
a) Light can be created
b) Light can be removed
c) Light can be destroyed
d) Light can be transmitted

What happens when light bends as it travels through two different substances?
a) Light is absorbed
b) Light is destroyed
c) Light is reflected
d) Light is refracted

If a rock is thrown in a pond, what happens to the kinetic energy of the rock?
a) the energy radiates in only on direction
b) the energy radiates in all directions
c) the energy radiates in two directions
d) the energy does not radiate at all

What produces waves?
a) energy
b) gravity
c) magnetism
d) mass

Mechanical waves travel fastest through which medium?
a) gasses
b) liquids
c) solids
d) vacuum

Which is NOT an example of waves traveling different speeds through different materials?
a) a pencil appearing broken in a glass of water
b) objects looking larger in a microscope
c) a full moon appears larger as it is rising
d) reflections in a spoon are upside down

What happens to light traveling through a pair of eye glasses?
a) absorption
b) diffusion
c) refraction
d) reflection

In what direction does heat transfer occur?
a) No specific direction
b) From cold objects to warmer objects
c) From warm objects to colder objects
d) Warm and cold objects do not interact

What determines the color of an opaque object?
a) electrical to chemical
b) electrical to nuclear
c) electrical to sound
d) electrical to light

Describe the transfer of energy that takes place when a radio is playing music.
a) the color of light that is diffracted
b) the color of the light that is reflected
c) the color of light that is refracted
d) the color of light that is transmitted

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