1st Quarter Exam for Science 4

Who is the Filipino scientist credited with inventing the video phone?

• Fe del Mundo

• Gregorio Zara

• Abelardo Aguilar

• Eduardo San Juan

Why is Alexander Fleming's discovery of penicillin considered a major breakthrough?

• It allowed faster communication worldwide.

• It saved millions of lives by treating bacterial infections.

• It helped improve farming techniques.

• It made transportation faster.

A community without electricity needs a power system that works over long distances. Which scientist's invention would best meet this need?

• Nikola Tesla - Alternating Current System

• Gregorio Zara - Video Phone

• Fe del Mundo - Bamboo Incubator

• Thomas Edison - Incandescent Light Bulb

Which of the following pairs shows inventions that both focus on space technology?

• Eduardo San Juan - Lunar Rover; Fe del Mundo - Bamboo Incubator

• Eduardo San Juan - Lunar Rover; Wernher von Braun - Saturn V Rocket

• Abelardo Aguilar - Erythromycin; Isaac Newton - Reflecting Telescope

• Gregorio Zara - Video Phone; Nikola Tesla - Radio

If Thomas Edison's light bulb had never been invented, which of the following would most likely happen?

• Factories and homes would rely longer on gas or oil lamps.

• Communication systems would not work.

• Antibiotics would not exist.

• Space exploration would stop.

Which invention allows people to communicate instantly from far distances?

• Refrigerator

• Telephone

• Printing Press

• Light Bulb

Why is the refrigerator considered important in everyday life?

• It helps keep food fresh longer, reducing waste.

• It provides entertainment at home.

• It allows faster travel to distant places.

• It makes construction work easier.

You are going camping for three days without electricity. Which invention would be most useful for keeping your phone charged?

• Electric stove

• Solar power bank

• Vacuum cleaner

• Microwave oven

How does the impact of the automobile differ from that of the bicycle in society?

• Both improve communication.

• The automobile allows faster long-distance travel, while the bicycle is more eco-friendly.

• The bicycle uses more fuel than the automobile.

• The automobile is cheaper and more environmentally friendly than the bicycle.

Which invention has had the greatest impact on spreading knowledge worldwide?

• Printing Press

• Airplane

• Electric Fan

• Sewing Machine