Metals
This property means a metal can be hammered into thin sheets without breaking.
What is malleability?
The tiny air sacs in the lungs where gas exchange occurs.
What are alveoli?
The method of heat transfer that can travel through empty space.
What is radiation?
The cause of day and night on Earth.
What is Earth’s rotation on its axis?
The upward force exerted by a fluid on an object placed in it.
What is upthrust?
This property means a metal can be drawn into wires.
What is ductility?
The muscle that contracts and flattens to help you inhale.
What is the diaphragm?
A diagram that uses arrow width to show energy transfers.
What is a Sankey diagram?
The cause of the seasons.
What is the tilt of Earth’s axis (23.5°)?
The unit of pressure, equal to one newton per square meter.
What is the pascal (Pa)?
The only metal that is liquid at room temperature.
What is mercury?
The word equation for aerobic respiration.
What is glucose + oxygen → carbon dioxide + water + energy?
The method of heat transfer through fluids (liquids and gases) by circulating currents.
What is convection?
A unit of distance, not time – the distance light travels in one year.
What is a light‑year?
The principle that explains why a boat floats: the weight of displaced fluid equals the weight of the object.
What is Archimedes’ principle?
A mixture of two or more metals, or a metal with another element.
What is an alloy?
The gas that turns limewater milky.
What is carbon dioxide?
A material that slows down heat transfer.
What is an insulator?
The name for a small rocky object that orbits the Sun, mostly found between Mars and Jupiter.
What is an asteroid?
This property of a fluid causes it to exert a force on all surfaces in contact with it, and it increases with depth.
What is pressure?
The most reactive metal in the reactivity series (from the common list).
What is potassium?
The process by which oxygen passes from the alveoli into the blood.
What is diffusion?
The formula for efficiency.
What is (useful energy output ÷ total energy input) × 100%?
An icy object that develops a tail when it gets close to the Sun.
What is a comet?
The name for a liquid or gas that can flow.
What is a fluid?