This means that the temperatures are ________ and there is more __________.

It is_______ in the Southern Hemisphere when the South Pole is tilting away from the Sun.

When the Sun’s rays have to travel further to reach the Southern Hemisphere, temperatures are _____ and there are more hours of _____.

how many days does it take the earth to orbit the sun?

One rotation takes Earth 26 hours, or one day, to complete.

It takes the Moon _____ ____ to orbit the Earth.

Both the Earth and the moon’s orbits move in a

clockwise direction, the opposite to that of clock hands.

The horizontal lines are called meridians, or lines of longitude.

The Equator is the longest parallel.

The Greenwich Meridian passes through Madrid.

Meridian lines run through the poles and across the Equator.

Greenwich Mean Time (GMT) is the standard against which all the world’s clocks are set.

______ defended the idea that the Earth orbits the Sun.

Two explorers, _____ and_____ , took three years to

circumnavigate the world by ship. They proved that the world was round .

In 1605, ________ proposed that planets have elliptical orbits.

Edwin ______ (1889-1953) discovered that the Universe is enormous and that it

is still expanding.

competed against each other in the Space Race.

was the first successful man-made satellite, launched by the USSR in 1957.

were astronauts from the USA who, in 1969, completed a lunar orbit and a Moon landing on the Apollo 11 Mission.