Science & Nature pub quiz questions

1. What SI unit measures the amount of a substance, defined by Avogadro's number of particles?

   The mole

2. What is the name for the path a planet takes around the Sun?

   Its orbit

3. Which element makes up the majority of the Sun, along with helium?

   Hydrogen

4. The element Astatine is named after the Greek word Astatos, what does this mean?

   Unstable

5. What is the process by which a cell engulfs a particle, literally meaning cell eating?

   Phagocytosis

6. What sea creature is known for its five arms and ability to regrow them?

   The starfish

7. What is meant by LOL in internet chat or text-speak?

   Laugh(ing) Out Loud

8. What is created when an electric current flows through a coil of wire, often around an iron core?

   An electromagnet

9. What stage comes between the larva and the adult in complete insect metamorphosis?

   The pupa

10. Which fish is known for changing sex during its life and lives among sea anemones?

    The clownfish

11. What are the tiny pores on the underside of leaves that control gas exchange called?

    Stomata

12. What do we call sound waves with frequencies too high for humans to hear?

    Ultrasound

13. What substance do coral reefs are primarily built from by tiny polyps?

    Calcium carbonate

14. What is the name of the tubes that transport water up through a plant?

    Xylem

15. What is the name for a violently rotating column of air in contact with the ground?

    A tornado

16. What is the energy of a moving object called?

    Kinetic energy

17. What is the name for sound at frequencies too high for humans to hear?

    Ultrasound

18. What is the name of the oldest known living tree species, often planted in temple gardens and considered a living fossil?

    The ginkgo

19. Which bird makes the longest annual migration, from Arctic to Antarctic?

    The Arctic tern

20. What large flightless bird native to Africa lays the largest eggs of any living bird?

    The ostrich

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