SCIENCE 1st Trim Exam Reviewer

Who invented the telephone?

• Albert Einstein

• Alexander Graham Bell

• Nikola Tesla

• Thomas Edison

Answer explanation

The telephone was invented by Alexander Graham Bell in 1876. He is credited with developing the first practical device that could transmit vocal sounds electrically, distinguishing him from other inventors like Edison and Tesla.

Which scientist developed the theory of relativity?

• Albert Einstein

• Louis Pasteur

• Gregorio Y. Zara

• Stephen Hawking

Answer explanation

The theory of relativity, which revolutionized our understanding of space and time, was developed by Albert Einstein in the early 20th century. The other scientists listed made significant contributions in different fields.

Who discovered pasteurization to make milk safe to drink?

• Angel Alcala

• Louis Pasteur

• Maria Y. Orosa

• Benjamin Almeda

Answer explanation

Louis Pasteur discovered pasteurization, a process that heats liquids like milk to kill harmful bacteria, making it safe to drink. This method significantly improved food safety and public health.

Who invented the first incubator for babies in the Philippines?

• Fe Del Mundo

• Angel Alcala

• Narciso Mosuela

• Gregorio Y. Zara

Answer explanation

Fe Del Mundo is credited with inventing the first incubator for babies in the Philippines, significantly improving neonatal care and survival rates.

Who invented the fluorescent lamp?

• Nikola Tesla

• Thomas Edison

• Gregorio Y. Zara

• Agapito Flores (claimed, but Zara recognized)

Answer explanation

Gregorio Y. Zara is credited with inventing the fluorescent lamp, although Agapito Flores claimed the invention. Zara's contributions are recognized as foundational in the development of this technology.

Who created the electric light bulb?

• Nikola Tesla

• Thomas Edison

• Albert Einstein

• Stephen Hawking

Answer explanation

Thomas Edison is credited with inventing the first practical electric light bulb in 1879, making him the correct answer. While others contributed to electric lighting, Edison's design was the first to be commercially viable.

Which Filipino scientist invented the videophone?

• Narciso Mosuela

• Benjamin Almeda

• Gregorio Y. Zara

• Maria Y. Orosa

Answer explanation

Gregorio Y. Zara, a Filipino scientist, is credited with inventing the videophone in the 1950s, making significant contributions to telecommunications technology.

Who invented the iPhone and Apple computer?

• Thomas Edison

• Steve Jobs & Steve Wozniak

• Nikola Tesla

• Stephen Hawking

Answer explanation

Steve Jobs and Steve Wozniak co-founded Apple and were instrumental in creating the Apple computer. Jobs also played a key role in the development of the iPhone, making them the correct answer to this question.

Who invented the automatic rice grinder?

• Narciso Mosuela

• Benjamin Almeda

• Maria Y. Orosa

• Angel Alcala

Answer explanation

Benjamin Almeda invented the automatic rice grinder, which significantly improved rice processing efficiency. His innovation has had a lasting impact on rice production in the Philippines.

Who invented the portable water heater and mosquito oiler?

• Maria Y. Orosa

• Narciso Mosuela

• Louis Pasteur

• Nikola Tesla

Answer explanation

Narciso Mosuela is credited with inventing the portable water heater and mosquito oiler, making him the correct choice among the options provided.