[Grade 10 Science: Physics] Chapter 10 Review
__________% of all ocean organisms are bioluminescent.
90% of all ocean organisms are bioluminescent.
A(n) __________ is a transfer of energy from one place to another, where matter is not transferred but does move as the energy passes.
A WAVE is a transfer of energy from one place to another, where matter is not transferred but does move as the energy passes.
An emergency kit for automobiles may contain a safety light that uses __________ to provide illumination. The package simply needs to be cracked, breaking a glass vial inside that allows a chemical reaction to occur.
An emergency kit for automobiles may contain a safety light that uses CHEMILUMINESCENCE to provide illumination. The package simply needs to be cracked, breaking a glass vial inside that allows a chemical reaction to occur.
As opposed to natural light from the Sun, incandescent bulbs and fluorescent tubes are sources of __________ light.
As opposed to natural light from the Sun, incandescent bulbs and fluorescent tubes are sources of ARTIFICIAL light.
__________ is the ability of an organism to produce its own light.
BIOLUMINESCENCE is the ability of an organism to produce its own light.
__________: jellyfish glow attracting tiny fish into their tentacles.
BIOLUMINESCENCE: jelly glow attracting tiny fish into their tentacles.
Bioluminescence originates from the word "bios", which means life, and "lumens", which means __________.
Bioluminescence originates from the words "bios", which means life, and "lumens", which means LIGHT.
__________: cool lights
CHEMILUMINESCENCE: cool lights
Carbon-arc lights were once used in lighthouses, because they were so bright: like lightning, carbon-arc lights are a form of __________ lightning.
Carbon-arc lights were once used in lighthouses, because they were so bright: like lightning, carbon-arc lights are a form of ELECTRIC DISCHARGE lightning.
Certain types of minty candies can be crunched between your teeth to produce tiny lights between your teeth. This light source is called __________.
Certain types of minty candies can be crunched between your teeth to produce tiny lights between your teeth. This light source is called TRIBOLUMINESCENCE.
__________: carbon-arc devices used by lighthouses to warn ships of danger undergo this process.
ELECTRIC DISCHARGE: carbon-arc devices used by lighthouses to warn ships of danger undergo this process.
Electricity passing through the air, as happens when lightning strikes, is an example of a(n) __________ light.
Electricity passing through the air, as happens when lightning strikes, is an example of an ELECTRIC DISCHARGE light.
__________: ultra-violet rays generated by electricity passing through mercury vapour causing phosphors to glow
FLUORESCENT LIGHT: ultra-violet rays generated by electricity passing through mercury vapour causing phosphors to glow
__________ are high-energy rays used in medicine to sterilize equipment: are also emitted by black holes.
GAMMA RAYS are high-energy rays used in medicine to sterilize equipment: are also emitted by black holes.
Gamma rays have the highest energy and __________ wavelength of all the different forms of energy in the electromagnetic spectrum.
Gamma rays have the highest energy and SHORTEST wavelength of all the different forms of energy in the electromagnetic spectrum.
__________: inefficient light generated from a heated filament
INCANDESCENT LIGHT: inefficient light generated from a heated filament
__________ used to produce thermograms, which reveal heat loss in homes.
INFRARED WAVES used to produce thermographs, which reveal heat loss in homes.
Incandescent lights are so inefficient because the light they release is just a side effect of all the wasted __________ they generate.
Incandescent light bulbs are so inefficient because the light they release is just a side effect of all the wasted HEAT they generate.
__________ are flat screen displays that use a backlight shining through liquid crystals that act like shutters on a window.
LCD (liquid crystal display) are flat screen displays that use a backlight shining through the liquid crystals that act like shutters on a window.
__________: commonly used in traffic lights and handheld devices
LED: commonly used in traffic lights and handheld devices
__________ are used to measure the speed of your car and warm your food.
MICROWAVES are used to measure the speed of your car and warm your food.
Many children have stars, moons and planets stuck to the ceiling of their bedrooms that glow after the lights have been turned off. These decorations use light energy to charge their __________ materials in order to glow.
Many children have stars, moons and planets stuck to the ceiling of their bedrooms that glow after the lights have been turned off. These decorations use light energy to charge their PHOSPHORESCENT materials in order to glow.
__________: thin, energy-efficient displays that have the potential to be very popular in a few years time.
OLED: thin, energy-efficient displays that have the potential to be very popular in a few years time.
__________: glow-in-the-dark objects that store energy from other light sources emit light.
PHOSPHORESCENT LIGHT: glow-in-the dark objects that store energy from other light sources emit light.
__________: flat screen displays that use tiny fluorescent lights to produce images and colours on the screen
PLASMA DISPLAY: flat screen displays that use tiny fluorescent lights to produce images and colours on the screen
__________ are used for MRI imaging of soft tissues in the human body.
RADIO WAVES are used for MRI imagine of soft tissues in the human body.
Seeing yourself reflected in a still pool of water is an example of a(n) __________ reflection.
Seeing yourself reflected in a still pool of water is an example of a REGULAR reflection.
Some __________ organisms use the light they create as a method of attracting a mate.
Some BIOLUMINESCENT organisms use the light they create as a method of attracting a mate.
__________ is quartz crystals in Aboriginal rattles that glow with this type of light when shaken against each other.
TRIBOLUMINESCENCE is quartz crystals in Aboriginal rattles that glow with this type of light when shaken against each other.
The colour of visible light with the shortest wavelength and highest frequency is __________.
The colour of visible light with the shortest wavelength and highest frequency is VIOLET.
The forms of energy that tend to be much more dangerous to humans are those with much __________ energy than visible light.
The forms of energy that tend to be much more dangerous to humans are those with much MORE energy than visible light.
The source of artificial light, also known as a "cool light" because it does not release any heat, is called __________.
The source of artificial light, also known as a "cool light" because it does not release any heat, is called CHEMILUMINESCENCE.
__________ have slightly more energy than visible light and can cause skin cancer.
ULTRAVIOLET RAYS have slightly more energy than visible light and can cause skin cancer.
Ultraviolet rays have more energy, a __________ wavelength, and higher frequency than visible light.
Ultraviolet rays have more energy, a SHORTER wavelength, and higher frequency than visible light.
__________ is the longest wavelength of visible light.
VISIBLE RED LIGHT is the longest wavelength of visible light.
__________ is the wavelength of visible light that has a wavelength just slightly longer than UV rays.
VISIBLE VIOLET LIGHT is the wavelength of visible light that has a wavelength just slightly longer than UV rays.
While compact fluorescent bulbs are more efficient than incandescent light bulbs, they are more dangerous because they contain __________ materials such as mercury.
While compact fluorescent bulbs are more efficient than incandescent light bulbs, they are more dangerous because they contain TOXIC materials such as mercury.
__________ are often used to reveal information about hidden flaws in solid objects.
X-RAYS are often used to reveal information about hidden flaws in solid objects.