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WorksheetsSMBP 3.4 Science Practice Paper, Final, Term 2, 2023
Total questions: 60
Worksheet time: 30mins
What is the main difference between thermoplastic and thermosetting polymers?
Thermoplastic polymers are more flexible than thermosetting polymers.
Thermosetting polymers can be melted and reformed while thermoplastic polymers cannot.
Thermoplastic polymers are stronger than thermosetting polymers.
Thermosetting polymers are used mainly in food packaging.
What is a composite material?
A material made of only one type of element or compound.
A material made of a mixture of two or more types of materials that retain their individual properties.
A material that can be easily melted and molded.
A material that can be molded into different shapes.
What are the primary components of ceramics?
Polymers and metals
Metals and alloys
Inorganic nonmetallic materials
Organic nonmetallic materials
Which of the following is a characteristic of a polymer?
High melting point
Brittle and easily breakable
Low density
Not affected by sunlight or temperature changes
What is the primary use of composites in aerospace engineering?
To reduce the weight of the aircraft
To increase the durability of the aircraft
To provide electrical conductivity
To provide a reflective surface
Ceramics are good conductors of electricity.
True
False
Not Given
Polymers are not commonly used in the automotive industry.
True
False
Not Given
The main use of composites is in the production of food packaging.
True
False
Not Given
The strength of ceramics increases as the temperature increases.
True
False
Not Given
The addition of carbon fibers to a polymer material can increase its strength.
True
False
Not Given
The process of joining two or more materials together to form a composite material is called ________.
Bonding
Alloying
Laminating
Reinforcing
The ability of a material to resist impact without breaking is called ________.
Brittleness
Toughness
Hardness
Malleability
The process of breaking down a polymer into its constituent monomers is called ________.
Condensation
Polymerization
Hydrolysis
Oxidation
The addition of a second material to a primary material to improve its properties is called ________.
Hardening
Alloying
Reinforcing
Strengthening
The term used to describe the degree to which a material resists being deformed is called ________.
Toughness
Ductility
Stiffness
Elasticity
Which type of wave requires a medium to travel?
Electromagnetic wave
Mechanical wave
Both A and B
None of the above
What is the speed of sound in air at room temperature?
343 m/s
300,000,000 m/s
3 x 10^8 m/s
186,000 miles/s
What is the relationship between frequency and wavelength of a wave?
Inversely proportional
Directly proportional
No relationship
Cannot be determined
What is the main difference between transverse and longitudinal waves?
Transverse waves are faster than longitudinal waves.
Transverse waves move perpendicular to the direction of the wave, while longitudinal waves move parallel to the direction of the wave.
Longitudinal waves have a higher frequency than transverse waves.
Transverse waves require a medium to travel, while longitudinal waves do not.
What type of wave is visible light?
Mechanical wave
Electromagnetic wave
Longitudinal wave
Transverse wave
Sound waves can travel through a vacuum.
False
True
Not Given
X-rays have a longer wavelength than visible light.
True
False
Not Given
The amplitude of a wave is directly proportional to its frequency.
True
False
Not Given
Electromagnetic waves require a medium to travel.
True
False
Not Given
The period of a wave is the time it takes for one complete wavelength to pass by.
True
False
Not Given
The unit for frequency is ________.
Watts
Hertz
Newtons
Amperes
The phenomenon of bending of waves around corners is called ________.
Diffraction
Reflection
Refraction
Interference
The distance between the crest and the trough of a wave is called the ________.
Frequency
Wavelength
Amplitude
Phase
The distance a wave travels in one complete cycle is called the ________.
Frequency
Wavelength
Amplitude
Period
The maximum displacement of a wave from its equilibrium position is called the ________.
Frequency
Wavelength
Amplitude
Phase
What is the law of reflection?
Light always reflects at a 45-degree angle.
The angle of incidence is equal to the angle of reflection.
The angle of incidence is greater than the angle of reflection.
The angle of incidence is less than the angle of reflection.
What is the difference between specular and diffuse reflection?
Specular reflection is the reflection of light from a rough surface, while diffuse reflection is the reflection of light from a smooth surface.
Specular reflection is the reflection of light from a smooth surface, while diffuse reflection is the reflection of light from a rough surface.
Specular reflection only occurs with polarized light, while diffuse reflection occurs with all types of light.
There is no difference between specular and diffuse reflection.
What is refraction?
The bending of light around a corner.
The reflection of light off of a smooth surface.
The slowing down of light as it passes through a medium.
The change in direction of light as it passes from one medium to another.
What is total internal reflection?
When light waves reinforce each other to create a stronger wave.
When light waves interfere with each other to create a weaker wave.
When light waves reflect off of a surface at a shallow angle.
When light waves are completely reflected back into the original medium.
What is the cornea?
The part of the eye that controls the size of the pupil.
The part of the eye that focuses light onto the retina.
The part of the eye that changes shape to adjust for near or far vision.
The part of the eye that produces tears.
Light always travels in a straight line
True
False
Not Given
Refraction occurs when light waves reflect off of a surface at a shallow angle.
True
False
Not Given
The iris is the part of the eye that focuses light onto the retina.
True
False
Not Given
The retina is responsible for producing tears in the eye.
True
False
Not Given
A convex lens always produces a virtual image.
True
False
Not Given
The index of refraction is a measure of how much a material ________ light.
Reflects
Absorbs
Bends
Transmits
The bending of light as it passes through a medium of different density is called ________.
Reflection
Refraction
Diffraction
Interference
The blind spot in the eye is where the ________ exits the eye.
Pupil
Cornea
Optic nerve
Lens
The ability of the eye to distinguish between two points that are very close together is called ________.
Depth perception
Color vision
Visual acuity
Accommodation
The colors of the visible spectrum, in order, are ________.
Red, orange, yellow, green, blue, indigo, violet
Red, orange, yellow, green, blue, violet, indigo
Red, yellow, green, blue, indigo, violet, orange
Red, yellow, green, blue, violet, indigo, orange
According to the wave-particle duality principle, what can light behave as? Provide an example of an experiment that supports this principle.
A wave or a particle, depending on the observer's position. The double-slit experiment is an example that demonstrated how light can exhibit interference patterns like waves.
A wave, but never a particle.
A particle, but never a wave.
Neither a wave nor a particle.
There are other types of light waves besides those in the visible spectrum.
True
False
Not Given
What is color, and how is it perceived by the human eye?
Color is the way we perceive the different wavelengths of light. Our eyes contain specialized receptors called cones that are sensitive to different wavelengths of light. When light enters our eyes, it stimulates these cones, which sends signals to the brain to create the perception of color.
Color is the way that light is reflected or transmitted by an object. Our eyes contain specialized receptors called rods that are sensitive to different colors. When light enters our eyes, it stimulates these rods, which sends signals to the brain to create the perception of color.
Color is the way that light is absorbed by an object. Our eyes contain specialized receptors called cones that are sensitive to different colors. When light enters our eyes, it stimulates these cones, which sends signals to the brain to create the perception of color.
Color is the way that light interacts with matter. Our eyes contain specialized receptors called rods that are sensitive to different wavelengths of light. When light enters our eyes, it stimulates these rods, which sends signals to the brain to create the perception of color.
The study of the interaction between light and matter is called ________.
Optics
Thermodynamics
Electrodynamics
Kinematics
What is additive and subtractive color mixing, and how do they work?
Additive color mixing involves adding different colors of light together to create new colors, and is used in electronic displays such as televisions and computer monitors. Subtractive color mixing involves filtering certain colors out of white light to create new colors, and is used in printing and painting.
Additive color mixing involves filtering certain colors out of white light to create new colors, and is used in printing and painting. Subtractive color mixing involves adding
different colors of light together to create new colors, and is used in electronic displays such as televisions and computer monitors.
Additive color mixing involves combining different types of particles together to create new colors, and is used in chemical reactions. Subtractive color mixing involves filtering certain colors out of white light to create new colors, and is used in medical imaging.
Additive color mixing involves filtering certain colors out of white light to create new colors, and is used in medical imaging. Subtractive color mixing involves combining different types of particles together to create new colors, and is used in chemical reactions.
Dental implants and artificial joints
Zirconia
Alumina
Silicon carbide
Titanium dioxide
Magnesia
Cutting tools and grinding wheels
Alumina
Zirconia
Silicon carbide
Titanium dioxide
Magnesia
Refractory linings and furnace components
Alumina
Zirconia
Silicon carbide
Titanium dioxide
Magnesia
Sunscreens and cosmetics
Alumina
Zirconia
Silicon carbide
Titanium dioxide
Magnesia
Fireproof fabrics and insulation
Alumina
Zirconia
Silicon carbide
Titanium dioxide
Magnesia
Used in communication and broadcasting
Radio waves
X-rays
Gamma rays
Ultraviolet (UV) rays
Infrared (IR) waves
Used in medical imaging and cancer treatment
Radio waves
X-rays
Gamma rays
Ultraviolet (UV) rays
Infrared (IR) waves
Highest energy and shortest wavelength of all electromagnetic waves
Radio waves
X-rays
Gamma rays
Ultraviolet (UV) rays
Infrared (IR) waves
Can cause sunburn and skin damage
Radio waves
X-rays
Gamma rays
Ultraviolet (UV) rays
Infrared (IR) waves
Used in heat lamps and remote controls
Radio waves
X-rays
Gamma rays
Ultraviolet (UV) rays
Infrared (IR) waves
