The Science and Nature Marathon

What this quiz asks

• Which of these is the SI unit of force?
• Which of these quantities is a vector, meaning it has a direction as well as a size?
• Which colour of visible light has the longest wavelength?
• Which law of thermodynamics says energy can change form but can never be created or destroyed?
• Almost all of an atom's mass is packed into its tiny nucleus.
• Roughly how much does one cubic metre of fresh water weigh, in kilograms?
• Order these types of electromagnetic radiation from the longest wavelength to the shortest.
• What is the chemical symbol for potassium?
• Which subatomic particle carries no electric charge?
• What is the chemical formula of ordinary table salt?
• On the pH scale, a liquid measuring 2 is described as what?
• Bronze is an alloy made mainly of copper and tin.
• Select ALL of these elements that are liquid at room temperature.
• Which gas turns clear limewater milky?
• Which type of rock forms when molten magma or lava cools and hardens?
• Which layer of the Earth lies directly beneath the crust?
• Select ALL of these that are layers of Earth's atmosphere.
• Is the Earth closer to the Sun in January than in July?
• Roughly how far is it from the Earth's surface to its centre, in kilometres?
• Order these geological periods from the oldest to the most recent.
• Which organelle carries out photosynthesis in a plant cell?
• In a DNA molecule, adenine always pairs with which base?
• Who set out the theory of evolution by natural selection in On the Origin of Species?
• Every living cell contains a nucleus.
• Select ALL of these structures that plant cells have but animal cells do not.
• This twisted ladder is the structure of which molecule?
• Which type of blood vessel carries blood away from the heart?
• Which organ produces bile, which helps the body digest fats?
• Where does most absorption of nutrients from food take place?
• A lack of which vitamin causes scurvy?
• Select ALL of these bones that are found in the human arm.
• Are babies born with more bones than an adult has?
• Which is the largest land animal alive today?
• Which is the only group of mammals capable of true, sustained flight?
• Spiders belong to which group of animals?
• Which plant tissue carries water from the roots up to the leaves?
• Select ALL of these animals that are ectothermic, taking their body heat from their surroundings.
• The animal shown here belongs to which class of animals?
• Which planet is home to the Great Red Spot?
• Which planet spins the fastest, completing a full day in under 10 hours?
• Saturn's rings are made mostly of what?
• A light-year is a measure of what?
• Select ALL of these that are planets of our Solar System.
• The Moon is slowly spiralling closer to the Earth.
• Roughly how many times wider than the Earth is the Sun?
• Which process powers the Sun, releasing energy in its core?
• Carbon-14, used to date organic remains, has a half-life of roughly how long?
• Order these from the smallest to the largest.
• Order these events from the earliest to the most recent.
• How many Earth years does Neptune take to complete one orbit of the Sun?