Q4 REVIEWER PHYSICAL SCIENCE

What provided early evidence for the Greeks to conclude that the Earth is spherical?

• The speed of wind

• The color of the ocean

• The shape of mountains

• Ship masts appearing before hulls

Which Greek philosopher first proposed that the Earth is spherical?

• Aristarchus

• Pythagoras

• Anaximander

• Socrates

What did Eratosthenes measure to make his calculation about the circumference of the Earth?

• Tides of the ocean

• Lengths of shadows

• Phases of the Moon

• Distance between the cities

What natural observation led ancient Greeks to believe in a spherical Earth?

• The changing positions of stars with latitude

• The color of the sky

• The shape of clouds

• The direction of ocean currents

Early astronomers noticed that certain stars remained fixed while others appeared to move against the background. The moving objects were called "wanderers." What did they identify these objects as?

• Comets

• Meteors

• Planets

• Stars

Why did the Greeks believe the Earth's shadow on the Moon was evidence of a sphere?

• The shadow was always round

• The shadow changed shape randomly

• The shadow was square

• The shadow disappeared after a while

What role did the constellations play in proving Earth's shape?

• Different constellations were visible at different latitudes

• Constellations moved randomly in the sky

• The Greeks believed the stars controlled Earth's shape

• The brightness of stars changed with time

Ancient observers noticed the regular cycle of light and darkness. This consistent pattern was fundamental to their understanding of celestial events. What recurring event did they observe daily?

• Comets

• Day and night

• Meteor showers

• Stellar parallax

The Sun's daily journey across the sky was a fundamental observation for early civilizations. They used this to orient themselves and track time. In which direction does the Sun generally appear to rise for observers on Earth?

• East

• North

• South

• West

Before telescopes were invented, early astronomers noticed that certain stars seemed to move differently from the rest of the night sky. These objects, which appeared to change position relative to background stars, were later identified as what?

• Asteroids

• Comets

• Planets

• Satellites