• Who discovered the shape of DNA?
  The discovery in 1953 that every molecule of DNA is shaped like a ...

• What is a knock-on effect?
  When two objects collide, their combined momentum remains the same, ...

• What is a polymer?
  Polymers are substances made from long chains of thousands of small ...

• What is a turning force?
  When something fixed in one place, called a fulcrum, is pushed or ...

• How is oil refined?
  Oil drilled from the ground, called crude oil, is separated into ...

• What is uniform motion?
  Uniform motion is when an object carries on travelling at exactly the ...

• What’s the difference between velocity and speed?
  Speed is how fast something is going. Velocity is how fast something ...

• What is Special Relativity?
  The theory of Special Relativity shows how both space and time can be ...

• Who was Einstein?
  Albert Einstein (1897-1955) was the scientific genius who transformed ...

• What is oil?
  Oils are thick liquids that won't mix with water. Mineral oils used ...