He pointed out that the shape of the earth’s shadow outline is always curve during the lunar eclipse.

• Aristotle

• Alexander the Great

• Eratosthenes

• Seleucus

He used the round earth theory and shadows to measure the circumference of the earth.

• Aristotle

• Alexander the Great

• Eratosthenes

• Seleucus

He proposed that not only earth is round, but it also revolves around the sun.

• Aristotle

• Alexander the Great

• Eratosthenes

• Seleucus

Which devices can tell the time of the day?

• gnomon

• obelisk

• sundial

• all of the above

Which of the phenomenon occurs when the moon is in between the sun and Earth?

• high tide

• low tide

• lunar eclipse

• solar eclipse

Who developed the heliocentric theory model of the universe and in the process initiated the scientific revolution?

• Tycho Brahe

• Johannes Kepler

• Claudius Ptolemy

• Nicolaus Copernicus

Who developed the model of the cosmos where planets orbit the sun?

• Tycho Brahe

• Johannes Kepler

• Claudius Ptolemy

• Nicolaus Copernicus

Who proposed the earth-centered theory?

• Tycho Brahe

• Johannes Kepler

• Claudius Ptolemy

• Nicolaus Copernicus

Which is referred to as a property of matter that resists changes in motion?

• inertia

• acceleration

• action – reaction

• none of these

Which concept of motion is exhibited when headrests are placed in cars to prevent whiplash injuries during rear-end collision?

• inertia

•  acceleration

• action-reaction         

• none of these