Physics test
Energy is most commonly measured in units called?
Decibels
Joules
Frequency
Hertz
Two main groups of Energy
Heat Energy, Gravitational Energy
Potential Energy, Chemical Energy
Nuclear Energy, Mechanical Energy
Kinetic Energy, Potential Energy
Sound travels fastest through?
Solids
Liquids
Vacuum
Gases
Sound travels slowest through?
Solids
Liquids
Vacuum
Gases
Sound cannot travel through?
Solids
Liquids
Vacuum
Gases
What causes sound?
Heat Energy
Vibration
EMR
Infrared
What type of energy does a rock balanced on top of a hill have?
Potential Energy, Kinetic Energy
Chemical Energy
Light Energy
Gravitational Potential
What type of energy does a chocolate bar have?
Heat Energy
Mechanical Energy
Light Energy
Chemical Energy
Heat can be transferred in 3 different ways
Conduction, Resonance, Radition
Radiation, Conduction, Convention
Reflection, Refraction, Radiation
Absorption, Transmission, Resonance
What word describes how all machines waste some energy?
Reflected
Conduction
Convention
Efficient
Energy transformation of a plant?
Chemical Energy to Light Energy
Light Energy to Chemical Energy
Heat Energy to Nuclear Energy
Nuclear Energy to Heat Energy
What does opaque mean?
Translucent
Not Translucent
Not Transparent
Transparent
What EMR will burn your toast?
Infrared
Visible Light
Gamma Rays
Ultraviolet
What EMR will burn your skin?
Infrared
Visible Light
Gamma Rays
Ultraviolet
What type of energy is sound?
Kinetic Energy
Potential Energy
Sound Energy
Gravitational Energy
Three things that can happen when heat waves hit an object
Radiation, Conduction, Convention
Transmitted, Resonance, Absorption
Absorption, Transmission, Reflection
Solid, Liquid, Gas
The frequency of sound is measured in what unit?
Decibels
Joules
Frequency
Hertz
Visible light is a small part of the?
Kinetic Energy
Resonance
Electromagnetic Spectrum
Longtitudal
State the Law of Refraction
The angle of incidence is always equal to the angle of reflection
The angle of incidence is greater than the angle of refraction
State the Law of Reflection
The angle of incidence is always equal to the angle of reflection
The angle of incidence is greater than the angle of refraction
The Loudness of sound is measured in what unit?
Decibels
Joules
Frequency
Hertz
The number of vibrations/second is called the?
Decibels
Joules
Frequency
Hertz
What do we call materials that do not allow the transfer of heat energy by conduction?
Efficient
Metals
Insulators
Conductors
Three examples of good conductors of heat
Aluminium, Gold, Copper
Glass, Rubber, Paper
Plastic, Cardboard, Water
Rock, Feathers, Paper
In what form does energy from the Sun reach the Earth
Vibration
Radiation
EMR
ERM
Why doesn't a ball bounce the same height it was dropped from?
It loses momentum
It forgot how to
Energy is wasted as friction
Friction is wasted as energy
What carries more energy?
Microwave
Visible Light
What carries more energy?
Radio waves
Gamma waves
State a use of concave mirror
Magnifying Glass
Car headlight
Rear-view mirrors
High pitched sound vibrates with a ______ frequency than low pitched sounds.
Higher/Faster
Lower/Slower
Sound waves can cause objects to vibrate and make the same sound
Reflection
Radiation
Refraction
Resonance
Your ear transforms sound energy into what type of energy?
Heat Energy
Electrical Energy
Chemical Energy
Sound Energy
The Law of Conservation of energy states that energy cannot be?
Created or Destroyed
Potential or Kinetic
Faster or Slower
Reflected or Absorbed
What machine transforms electrical energy into heat energy?
Bicycle
Chocolate Bar
Hammer
Electric Stove
Sound waves are _____ waves, a series of ________ each followed by _______.
Longtitudal, Compressions, Rarefactions
Compressions, Rarefactions, Longtitudal
Radiation, Conduction, Convection
Conduction, Radiation, Convention
Kinetic energy of particles of a substance.
Forces
Heat Energy
The Law of Conservation
Energy
Five things can happen when sound energy hits an object, what are they?
Radiation, Refraction, Convection, Efficient, EMR
Refraction, Resonance, Reflection, Absorption, Transmission
Transmission, Absorption, Conduction, Convention
EMR, Convection, Refraction, Absorption, Resonance
When something is heated its particles move ______.
Faster
Slower
Straight
Diagonally
Everything is made up of particles except?
Energy, Sound
EMR, Light
Chemical, Heat
Electricity, Energy
_____ is heat energy produced by atoms colliding
Force
Energy
Atoms
Friction
Friction wastes energy whenever something is ______ or parts are touching
Heating
Colliding
Sliding
Moving
Invinsible heat waves
Radiation
Conduction
Convention
Insulators
Light travels in the form of _____
Atoms
Energy
Waves
EMR
The transfer of heat in liquids and gases by the mixing of particles
Radiation
Conduction
Convention
Insulators
The _____ is a line drawn at 90 degrees to the surface of the prism at the point where the beam of light enters or leaves the prism.
Reflection
Normal
Refraction
The human _____ also has convex lens
Ear
Nose
Eye
Toungue
The ____ opens and closes to the amount of light entering the eye.
Retina
Cornea
Iris
Lens
Light first comes into the eye through the transparent ______.
Retina
Cornea
Iris
Lens
The wavelength of a ______ wave is measured by the distance between one crest of a wave to the next.
Amplitude
Transform
Speed
Transverse
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