Time zones

Planet Earth spins on an imaginary pole called axis. 

• True
• False

Time zones are marked by longitudinal lines called meridians.

• True
• False

They run horizontally with a separation of 15 degrees.

• True
• False

Sir Sandford Fleming proposed that time should start in Canada. 

• True
• False

The system is known as GMT.

• True
• False

By the 1900s, all countries had adopted the system. 

• True
• False