PHYSICAL SCIENCE PRELIMS

One of the earliest pieces suggesting that the earth is a spherical comes from

• Ancient Greek Astronomers

• From the book

• Modern Astronomers

• Modern scientists

An ancient greek mathematician and astronomer hypothesized that the rays of sunlight heating the earth are essentially parallel he made this assumption based on his observation of shadows cast by objects at different latitudes on earth

• Eratosthenes

• Tycho Brahe

• Johannes Kepler

• Aristotle

During a solar eclipse, when the earth passes between the sun and the moon the earth's shadow is cast on to the surface of the moon this shadow appears curve and its curvature matches the expected shape of spherical object

• True, A curve match in the expected shape

• False, It is Lunar Eclipse

• I don't know

The primary cause of it is the combined gravitational influence of the moon and the sun on the earth's equatorial bulge, as well as Earth's axial tilt

• Precession of Equinoxes

• Annual Motion

• Diurnal Motion

• Total Solar Eclipse

Answer explanation

Example of astronomical phenomena before the advent of telescopes

The earth's revolution around the sun causes a phenomenon known as

• Stellar Parallax

• Stellar Revolution

• Stellar phenomenal type

• A parallax

The earth's revolution around the sun causes a phenomenon known as stellar parallax which is the apparent shift in the position of nearby star relative to more distant one as observed from different points in earth's orbit

• Annual Motion

• Diurnal Motion

• Total Solar Eclipse

• Lunar Eclipse

It refers to the apparent daily revolution of the celestial sphere around the celestial poles due to the earth's rotation on its axis this motion causes celestial objects to rise in the east move across the sky and set in the west over the course of a day creating the cycle of day and night

• Diurnal Motion

• Equinoxes

• Annual Motion

• Lunar eclipse

The moon passes directly between the earth and the sun completely blocking the sun's bright disc from view

• Total Solar Eclipse

• Lunar eclipse

• Diurnal Motion

• Annual Motion

During a ______ the earth's shadow completely covers the moon giving it a reddish hue often referred to as a _______

• Lunar Eclipse, Blood Moon

• Solar Eclipse, Blood moon

• Equinoxes, blood moon

A danish astronomer made incredibly precise observation of the position of planets and stars over many years

• Tycho Brahe

• Johannes Kepler

• Aristotle