GENERAL KNOWLEDGE QUIZ SCIENCE EDITION

1. How many elements are in the periodic table of elements?

• A. 116

• B. 117

• C. 118

Answer explanation

The periodic table currently contains 118 confirmed elements, with the last element, Oganesson (Og), being added in 2016. Therefore, the correct answer is C. 118.

2. Which planet in the Milky Way is the hottest?

• A. Venus

• B. Mars

• C. Jupiter

• D. Earth

Answer explanation

Venus is the hottest planet in the Milky Way due to its thick atmosphere, which traps heat through the greenhouse effect, resulting in surface temperatures around 900°F (475°C), hotter than Mercury, despite being further from the Sun.

3. Who discovered that the Earth revolves around the sun?

• A. Tycho Brahe

• B. Albert Einstein

• C. Nicolaus Copernicus

• D. Isaac Newton

Answer explanation

Nicolaus Copernicus proposed the heliocentric model, which states that the Earth and other planets revolve around the Sun, fundamentally changing our understanding of the solar system.

4. What is the process by which plants convert sunlight to energy?

• A. Sublimation

• B. Photosynthesis

• C. Precipitation

• D. Condensation

Answer explanation

The correct answer is B. Photosynthesis, which is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen, providing energy for growth.

Water boils at (a)   degrees Celsius at standard atmospheric pressure.

The basic unit of life is the (a)   .

6. (a)   are substances that speed up chemical reactions without being consumed in the process.

7. The force that attracts objects toward the center of the Earth is known as (a)   .

9. How do plants and animals respond to changes in their environment, such as climate change or habitat destruction, and what are the potential long-term consequences?

10. How do changes in temperature and pressure affect the transition between different states of matter (solid, liquid, gas, and plasma)?