Grade 8 Comprehension and Skills Quiz

Read the following passage and answer the question: *"The Amazon rainforest, often called the 'lungs of the Earth,' produces about 20% of the world's oxygen. It is home to millions of species of plants, animals, and insects. The forest covers most of the Amazon Basin in South America and spans across nine countries."* What percentage of the world's oxygen does the Amazon rainforest produce?

• 10%

• 15%

• 20%

• 25%

Read the following passage and answer the question: *"The Great Wall of China was built over many centuries by different Chinese dynasties. It stretches approximately 13,170 miles across northern China. The wall was primarily built to protect Chinese states from invasions and raids by nomadic groups."* What was the primary purpose of building the Great Wall of China?

• To serve as a trade route

• To protect Chinese states from invasions and raids

• To mark the boundary between two rivers

• To provide shelter for travelers

Read the following passage and answer the question: *"Water covers about 71% of the Earth's surface. However, only about 3% of all water on Earth is freshwater, and most of that is locked in glaciers and ice caps. This means that less than 1% of Earth's water is accessible for human use."* What percentage of Earth's surface is covered by water?

• 50%

• 61%

• 71%

• 81%

Read the following passage and answer the question: *"Solar energy is energy from the sun that is converted into thermal or electrical energy. It is the cleanest and most abundant renewable energy source available. Solar panels, also known as photovoltaic cells, are used to capture sunlight and convert it into electricity."* What is another name for solar panels as mentioned in the passage?

• Thermal converters

• Energy absorbers

• Photovoltaic cells

• Light conductors

Read the following passage and answer the question: *"Mount Everest is the highest mountain in the world, standing at 8,849 meters above sea level. It is located in the Himalayas on the border between Nepal and Tibet. Every year, hundreds of climbers attempt to reach its summit."* Where is Mount Everest located?

• On the border between India and China

• On the border between Nepal and Tibet

• On the border between Pakistan and Afghanistan

• On the border between Bhutan and Nepal

Choose the correct present perfect form to complete the sentence: "She ________ her homework already."

• finish

• finished

• has finished

• is finishing

Which sentence is written correctly in the present perfect tense?

• They go to Paris last year.

• They have gone to Paris.

• They are going to Paris.

• They goes to Paris.

Choose the correct present perfect form to complete the sentence: "I ________ never ________ sushi before."

• do / eat

• have / eaten

• had / eat

• am / eating

What is the past participle of the verb "write" used in the present perfect tense?

• writed

• wrote

• written

• writing

Choose the correct present perfect form to complete the sentence: "The students ________ their science project."

• have completed

• has complete

• completed has

• are complete