AQA A-LEVEL GEOGRAPHY: AMAZON RAINFOREST EXAM

PDF Download

AQA A-LEVEL GEOGRAPHY: AMAZON RAINFOREST EXAM

QUESTIONS

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -9 Questions and Answers -format set of multiple-choice -Expert- Explanation

Question 1: Limiting human impact

Answer:

• Selective logging
• Replanting
• Environmental laws
• Landowners must keep 50-80% of their land forest
• National parks and nature reserves make up 25.3 million hectares
• COP26 aims to end deforestation by 2030, with £14 billion funds to assist

Question 2: Facts

Answer:

• World's largest rainforest
• Rainforests cover 6% of Earth and account for 30-50% of global photosynthesis
• 30 billion trees, 15,000 store 1/5 of the planet's biomass
• Humid and wet climate (1500-3000mm rainfall)
• Home to 1 million indigenous people and plant species

Question 3: Location

Answer:

• 40% of South America
• 63% in Brazil
• 13% in Peru

Question 4: Carbon cycle

Answer:

• Warm conditions promote photosynthesis
• Carbon sink
• Increased CO2 has led to more productivity
• Increased carbon sequestration
• Decomposition and respiration

Question 5: Climate change

Answer:

• 4 degree increase could kill 85% of the Amazon
• Mean temperatures increase 0.26 degrees every 10 years since the 1970s
• By 2050, the rainforest could have warmed by 2-3 degrees

Question 6: Deforestation

Answer:

• Deforestation jumped 55% in the first 4 months of 2020

- Total tree loss in 2019: 2.4 million hectares

• Increased by 9.5% from 2019-20
• No interception
• Increased runoff and risk of flooding
• Evaporation decreases which reduces rainfall and increases drought
• Carbon in the soil is transported into the hydrosphere
• Deforestation could lead to 20% less rainfall
• Less CO2 is absorbed

Question 7: Water cycle

Answer:

• Evaporation blown over from the Atlantic ocean
• High interception
• 75% of water is intercepted
• 35% reaches the ground from drip tips and plants
• 25% evaporates

Question 8: Human activity

Answer:

• Climate change leads to drought, extinction and forest fires
• Cattle ranching is responsible for 70-80% deforestation
• Logging contributes to degradation of land
• Soy farming is responsible for 37% of global production
• Transport - 1000km railroad for transporting soy
• Illegal mining increased by 25% from 2018-19

Question 9: Impact

Answer:

• Wood burning releases 30-60% of carbon to the atmosphere
• The Amazon has been shrinking by 0.3% since 2000
• It emits 2.2 billion tonnes of CO2 each year, 1.9 billion from respiration and decomposition
• Stores 80-120 billion tonnes of carbon
• Carbon sink of 1-3 Gt a year