Energy (DK findout) Flashcards
The visible and invisible spectrum of light is collectively known as
The electromagnetic spectrum
Can sound travel through outer space
No. As there are no air particles for it to travel through
The speed of sound at 340. Enters per second is known as
MACH 1
When a gas changes to liquid it is called
Condensation
Some animals use chemical energy to create light, this phenomenon is known as
Bioluminescence
When a liquid or gas is heated up it expands and moves upwards, this is known as
Convection
What energy changes take place when KEIARA Runs
Keiara’s POTENTIAL CHEMICAL ENERGY which is stored in the muscles is changed to KINETIC ENERGY
The freezing point of water is
0 degrees Celsius
When a gas changes into solid it is called
Deposition
Do raindrops act as small prisms
Yes
If we took all the energy from an object, it’s particles wouldn’t move and the temperature of this object would be
-273 degrees Celsius also known as absolute zero
In the sun two hydrogen join together to form
Helium
Very very low pitched sounds are known as
Infrasounds
What can happen if the Giant loops on the surface of the sun break away
They release high energy matter into space which can interrupt radio and television broadcast on earth
Sound travels through solids liquids and gases in the form of
Waves
What is LAW OF CONSERVATION OF ENERGY
Energy cannot be created or destroyed, it just changes from one type of energy to another
The earth is made of three layers
Core Mantle Crust
Give an example of kinetic energy being passed between two objects
When you kick a ball the kinetic energy from your foot is passed on to the ball, which moves the ball
What are the three different ways that Heat Travels
Conduction Convection Radiation
Can energy be destroyed
No
Give two examples of organisms that use chemical reactions in their bodies to produce light
Fireflies Algae
What is a Prism
It is a triangular shaped block of glass
The centre of an atom is called as the
Nucleus
Very very high pitched sounds are known as
Ultrasound
The particles in a solid are in fixed positions, they vibrate but they do not move, is this true
Yes
Most of the kinetic energy ends as
Heat energy
Give an example of elastic potential energy
A bowstring that is pulled back
What is kinetic energy
Anything that is moving in the universe has kinetic energy
Name the nine types of energy
Kinetic energy Potential energy Heat energy Light energy Magnetic energy Sound energy Electrical energy Chemical energy Nuclear energy
The light that we can see is called the..
Visible spectrum
Why do we get the SONIC BOOM
Because the aircraft catches up with its own sound waves squashing them together
How far is the sun from the earth
149.6 million kms away
Can energy change from one form to another
Yes
The faster the vibration of a sound wave, the pitch of a sound wave is
Higher
The atoms are made of even tinier particles, name them
Positively charged…PROTONS Negatively charged..ELECTRONS No charge..NEUTRONS
What is ENERGY
It is the ability of a physical system to do work
How does Heat travel
Heat always travels from Hot to cold
Temperature is measured as degree Celsius or degrees Fahrenheit, how is sound measured
Decibels
Particles of a gas move quickly away from each other in all directions, filling the space they are in, is this true
Yes
We usually measure temperature as
Degrees Celsius Degrees Fahrenheit
What are the three different ways that Heat Travels
Conduction Convection Radiation
The light we cannot see is called the…
Invisible spectrum
Give example of an animal that splits light using their bodies as a PRISM
CTENOPHORES
What is the speed of sound through air
- Meters per second
The fastest land animal is the
Cheetah
Do all moving objects have energy
Yes
Objects that block light completely are described as
Opaque objects
Do hot things have more energy than cold things
Yes
The boiling point of water is
100 degrees Celsius
Another name for kinetic energy
Movement energy
The temperature at the surface of the sun is
5500 million c
What is INFRASOUND
Infrasounds are too low for humans to hear
Give two types of Potential energy
Elastic Potential Energy Gravitational Potential Energy
When heat travels through an object or between objects when they are in contact, this is known as
Conduction
Does light travel in a straight line
Yes
When two hydrogen atoms in the sun join together, it releases a lot of energy, this process is called
Nuclear Fusion
What is the relationship between force and energy
Force changes one form of energy to another
How do elephants communicate with each other
Through INFRASOUNDS
An example of solid water is
Ice
When a liquid changes into gas it is called
Evaporation
When heat travels through an object or between objects when they are in contact, this is known as
Conduction
CTENOPHORES are also known as
Comb jellies
The sun is mostly made up of which gas
Hydrogen Gas
The suns super hot surface can form huge loops of gas, called the
Giant Loops
When a liquid changes into solid it is called
Solidification or Freezing
Can kinetic energy be passed between two objects
Yes
What created all the energy in the universe
A massive explosion 13.8 billion years ago made all the energy that exists in the universe today
Very very high pitched sounds are known as
Ultrasound
Hot things produce invisible rays called
Infra red radiation
The temperature at the core of the sun is
15 million c
Can some animals use their bodies like a PRISM and split light
Yes
Give an example of a FORCE changing one form of energy to another
When a pencil is dropped from a height ( POTENTIAL ENERGY), the gravity (FORCE) changes the potential energy to kinetic energy
Give an example of chemical energy changing to movement energy
We eat plants ( CHEMICAL ENERGY) which is then stored in our bodies which later helps us run, walk (MOVEMENT ENERGY)
All of matter is made of tiny invisible particles called
Atoms
How can we measure temperature
Using a thermometer
When is sound created
Sound is created when something vibrates
Can sound travel through solids, liquids and gases
Yes
The faster Keiara Proenca runs, does keiaras kinetic energy increase or decrease
Increase
If sounds travels faster than MACH 1 it is known as
Supersonic sound
What are two properties of a liquid
It flows It takes the shape of a container
Give an example of kinetic energy ending as heat energy
Rubbing your hands together
What is SONIC BOOM
When a aircraft travels at the speed of sound, it creates a big noise called SONIC BOOM
Why are CTENOPHORES also known as comb jellies
Because they split light with their hairy comb like fins
When a solid changes into liquid it is called
Liquefaction
The centre of the atom, known as the. Ucleus is made of two particles, name them
Protons Neutrons
White light can be separated into different colours by using a
Prism
Who discovered the absolute zero temperature
Lord Kelvin
Name the invisible spectrum of light
Ultraviolet rays X rays Gamma rays Infrared rays Microwaves Radio waves
The temperature at which a liquid changes into gas is called
Boiling point
Give an example of light energy converting to chemical energy
Plants use sunlight ( LIGHT ENERGY) to make food (CHEMICAL ENERGY) which is stored in the leaves
The temperature at which a solid changes into a liquid is called
Melting point
On what does the temperature of an object depend
It depends on how the particles that make up the object are moving
Very very low pitched sounds are known as
Infrasounds
Water in a gas form is known as
Water vapour
What is temperature
It is a measure of how hot or cold a thing is
Particles in a liquid tend to move past each other, is this true
Yes
What is potential energy
Any type of energy that is stored and ready to be used is called potential energy
The bigger the vibration of a sound wave , the volume of sound…
Increases
Why does an ice cream feel cold in our mouth
Because heat energy leaves our mouth and travels to the ice cream
What is a VAPOUR CONE
When an aircraft travels at the speed of sound it creates a cone shaped cloud called VAPOUR CONE
The biggest source of energy on earth is
The sun
