4) Natural Causes Of Climate Change

Question 1

Discuss volcanoes as a cause of climate change (5)

Answer 1

• An active volcano produces large amounts of sulfur when it erupts.
  -It also produces gases like:
  •carbon dioxide
  •sulfur oxide
  •hydrogen chloride
  •and hydrogen fluoride

Question 2

Discusse moving continent as a cause of climate change (5)

Answer 2

• Continents can move over long periods of time
• and affect our climate.
• It is believed that 3 million years ago that North America and South America were separate massive.
• They clashed and the snake piece of land was formed.
• This is known as Isthmus of Panama, and had a huge impact on our climate

Question 3

Discuss Isthmus of Panama (4)

Answer 3

• Before Isthmus of Panama, the warm pacific ocean and the cold Atlantic ocean flown into each other.
• Once South America North America clash, this was no longer possible.
• The warm Caribbean flowed into the Atlantic and up towards Europe.
• The warm water caused Europe to become warmer

Question 4

What is the earths axis? (2)

Answer 4

• Imagine a rod is put through the Earth from the north to south pole.
• This road is known as the earths axis

Question 5

Discuss the earths rotation around it self (3)

Answer 5

• Every 24 hours the Earth spins around it self once.

- When it’s facing the Sun it today. - When it’s facing away from the Sun it’s dark and night

Question 6

Discuss the earths orbit around the sun (5)

Answer 6

• Earth also moves around the sun. -One year equals one orbit around the sun.
• The earths axis is tilted 23, 5°.
• It doesn’t move in a circular motion, it moves in and egg shaped path.
• Sometimes it’s closer to the Sun and sometimes it’s further away

Question 7

What is the sun? (1)

Answer 7

A big ball of fire

Question 8

How do we experience seasons (2)

Answer 8

• Because the Earth moves in an egg-shaped way, we experience seasons
• It’s hotter certain time a year when we’re closer to the sun

Question 9

Discuss the fact that we are moving closer to the sun (4)

Answer 9

• Over millions of years, the orbit around the sun has changed
• We move closer and futher away
• In the last 100 years we have moved closer
• because the temperatures are rising

Question 10

What is a supernova? (1)

Answer 10

It’s an explosion in space cauesed by the collaps of the core of a massive star

Question 11

How do supernovas effect our climate in theory (4)

Answer 11

• some scientists believe the climate is changing because of supernovas in nearby galaxies
• the energy can light a whole galaxy before disappearing
• some scientists believe the energy can travel as far as earth
• it enters the atmosphere, creates clouds and adds to the greenhouse effect