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100

Which four letter word is a unit of electrical power?

Watt

100

Hydrogen combines with which other elements to form water?

Oxygen

100

Which sugary liquid do insects get from plants and flowers?

Nectar

100

What term do astronomers use for a group of stars?

Constellation

100

Which term describes a sudden explosion on the surface of the sun?

Solar Flare

200

Our teeth are covered by which hard, shiny material?

Enamel

200

HIV grew to mass notoriety during which decade?

1980s
200
Which metal, used for currency or jewellery, has the chemical symbol Ag?

Silver

200

Which planet of the solar system is closest to the sun?

Mercury

200

Stephen Hawking was a pioneer in which field of science?

Theoretical Physics

300

Which word describes a plant made by crossing two other species of plant?

Hybrid

300

Which pigment gives our skin color?

Melanin

300

The verb pollinate is used to describe the fertilisation of which living objects?

Plants
300

Which power is generated using the fission process 

Nuclear

300

Which is the lightest metal in chemistry's periodic table?

Lithium

400

Which metal is most commonly used to make a soft drinks can?

Aluminium

400

Which scientists study rocks and the Earth's composition?

Geologists

400

Which tree family includes the sycamore and maple?

Acer

400

Where in the body is the trachea located?

The neck

400

Which dietary mineral is essential for strong bones?

Calcium

500

Which term do doctors often use instead of stiches?

Sutures

500
Copper turns which color when it oxidises in the open air?

Green

500

Joseph Priestley discovered which gas in 1774?

Oxygen

500

What is the name for the blood vessel which carries blood away from the heart?

Artery

500

A haematologist is an expert in which field of medicine?

Blood

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