Light and Matter
How long is one light-year for the Earth?
one Earth year
What is Heat Transfer?
Heat energy moves from one place to another because of the temperature difference
How are mountines made from the Earth?
When titonic plates Colid
what is a natural hazard?
a mixture of gases that surrounds a planet
Struture and Funtion
Body parts have different forms, depending on their jobs
How does light interact with matter?
Light that hits matter can be absorbed, reflected or passes right through the material.
What are the three main types of heat transfer?
conduction, convection, radiation
What is climate compared with weather?
the usual weather in a place, measured over a long period of time
what is a disaster?
A disaster occurs when harm actually occurs to the environment, people or the economy
what is a cell?
smallest unit of life
What is the process of absorption?
Absorption is the process of converting light energy into thermal energy when light rays hit an atom and light's energy is transferred to the atom.
What happens to the weather when it changes too fast?
Can cause a storm of some kind
where the energy comes from in the water cycle (the SUN!)
energy source
what are the different types of natural hazards?
volcanic eruptions, earthquakes, storms, tsunamis, landslides, floods, pests, diseases
what is a organelle
A tiny cell structure that carries out a specific function within the cell
How does transmission of a light wave occur?
Transmission occurs when light rays strike a material and are transferred through the material.
What does Temperature have to Do with Termel Energy?
The measure of the average kinetic energy of the molecules of a thing
water that does NOT go into the ground and instead flows into another water source (ocean, lake, river)?
runoff
what are 4 factors that can affect natural hazard risk?
Population: As the world population increases, more people live in areas which are vulnerable to natural hazards
Urbanisation and population density: Urban areas are more densely populated, increasing the numbers of people at risk
Frequency and magnitude: How often a hazard event occurs as well as the size and strength of the event
Level of development: High Income Countries (HICs) are more prepared and are more able to cope with the effects than Low Income Countries (LICs) and Newly Emerging Economies (NEEs
How many body systems are there?
11
Explain the process of scattering a light wave?
Scattering is the process of material absorbing light and then re-emitting light in different directions.
What does kinetic energy have to do with thermal energy?
the energy that an object has because it is moving
a mixture of gases that surrounds a planet
atmosphere
describe the 4 different parts of the earth's structure?
Inner core: About 1400km in diameter, a solid and dense layer composed of iron and nickel with temperatures of about 5500°C
Outer core: About 2100km thick, a semi-molten metal layer with temperatures between about 5000-5500°C
Mantle: About 2900km thick, a semi-molten layer which is less dense than the outer core
Crust: The thickness varies, and is made up of two types of crust
what is the Smooth ER with the cells?
That portion of the endoplasmic reticulum that is free of ribosomes.