human flourishing

Who discovered the force that keeps an object to be pulled downward?

• Galileo Galilei

• Johannes Kepler

• Aristotle

• Isaac Newton

What is one of the fundamental forces of nature that enables an object to be pulled towards the center of the earth?

• weak force

• Intermolecular force of attraction

• gravity

• acceleration

How was gravity discovered?

• Through a leaf and stone thrown from Leaning Tower of Pisa

• Through an apple which fell from a tree

• Through the force that keeps the planets orbiting around the earth

Who was the first person to patent the telescope?

• Tycho Brahe

• Galileo Galilei

• Hans Lippershey

• Zacharias Jansen

Who was the first person to discover that there are minute animals in a pond of water using a simple microscope?

• Galileo Galilei

• Anton Van Leewenhoek

• Robert Hooke

• Zacarias Jansen

What chemical is found in crude oil and is a major part of gasoline?

• benzene ring

• trinitrotoluone

• petroleum ether

• diesel

The invention of radio has its root from:

• morse code

• telegraph

• amplitude modulation

• frequency modulation

What is the dominant means of wireless marine communication at the beginning of the 20th century?

• morse code

• telegraph

• radio

• amplitude modulation

Who are the two persons given credit in the invention of amplitude modulation?

• Edwin Armstrong and Lee de forest

• Lee de Forest and Thomas Edison

• Guglielmo Marconi and Edwin Armstrong

Fire arm devices using gunpowder first appeared in what civilization?

• Chinese Tang Dynasty

• Chinese Yuan Dynasty

• Europe

• Japanese