Free ready-made round
Free science and nature pub quiz questions and answers.
Explore animals, the human-made world, chemistry and space in a science round designed for lively mixed teams.
Questions and answers
Science and nature quiz round
Open each answer only when you are ready to mark. Every answer includes a short supporting fact.
01Science & nature · EasyWhat is the only mammal capable of true sustained flight?Show answer+
Other so-called flying mammals glide rather than generate powered flight.
02Science & nature · MediumWhich planet has the shortest day in our solar system?Show answer+
Jupiter rotates once in just under ten hours.
03Science & nature · EasyWhat is the hardest natural substance?Show answer+
Diamond scores 10 on the Mohs scale of mineral hardness.
04Science & nature · TrickyWhich element has the chemical symbol W?Show answer+
The W comes from wolfram, an older name for tungsten.
05Science & nature · EasyWhat is the chemical formula for water?Show answer+
Each water molecule contains two hydrogen atoms and one oxygen atom.
06Science & nature · EasyWhich planet is known as the Red Planet?Show answer+
Iron minerals in Martian soil give the planet its reddish colour.
07Science & nature · EasyWhich gas do plants absorb during photosynthesis?Show answer+
Plants use carbon dioxide, water and light energy to make sugars.
08Science & nature · EasyWhat is the largest organ of the human body?Show answer+
The skin is the body’s largest organ by surface area and weight.
09Science & nature · MediumApproximately how fast does light travel in a vacuum?Show answer+
The exact speed is 299,792,458 metres per second.
10Science & nature · EasyAt sea level, at what temperature does pure water boil?Show answer+
Water’s boiling point changes when atmospheric pressure changes.
11Science & nature · EasyWhat shape is a DNA molecule usually described as?Show answer+
DNA’s two strands wind around one another in a double helix.
12Science & nature · EasyWhat is the largest animal known to have lived?Show answer+
Blue whales can grow to around 30 metres long and weigh well over 100 tonnes.
13Science & nature · MediumWhich cell structure carries out photosynthesis in plants?Show answer+
Chloroplasts contain chlorophyll, which captures light energy.
14Science & nature · EasyHow many chambers does the human heart have?Show answer+
The heart has two atria and two ventricles.
15Science & nature · EasyWhat number is neutral on the pH scale?Show answer+
At room temperature, a pH of 7 is neutral.
16Science & nature · EasyWhat force pulls objects towards the centre of Earth?Show answer+
Gravity gives objects weight and keeps the Moon in orbit around Earth.
17Science & nature · EasyWhat is the nearest star to Earth?Show answer+
The Sun is about 150 million kilometres from Earth.
18Science & nature · MediumWhat is the scientific study of earthquakes called?Show answer+
Seismologists study seismic waves produced by earthquakes and other sources.
19Science & nature · EasyWhich gas makes up most of Earth’s atmosphere?Show answer+
Nitrogen accounts for about 78 percent of Earth’s atmosphere.
20Science & nature · MediumWhat is the largest internal organ in the human body?Show answer+
The liver is the largest solid internal organ.
21Science & nature · EasyA frog belongs to which class of animals?Show answer+
Most frogs begin life in water before changing into air-breathing adults.
22Science & nature · EasyWhich element has the chemical symbol Au?Show answer+
Au comes from the Latin word aurum.
23Science & nature · MediumHow many pairs of chromosomes do most human cells contain?Show answer+
Most human cells contain 46 chromosomes arranged in 23 pairs.
24Science & nature · EasyWhich planet is famous for its prominent ring system?Show answer+
Saturn’s rings are made mainly of ice particles with rock and dust.
25Science & nature · EasyHow many legs does a honeybee have?Show answer+
Like all insects, honeybees have three pairs of legs.