SCIENCE BST404 - TIDES & ECLIPSES

TIDES & ECLIPSES

The position of _____ like the Sun and the moon influences the occurrence of tides and solar and lunar eclipses on Earth.

• Celestial bodies

• Celestials

• Planets

• Stars

TIDES & ECLIPSES

In 1687, _____ explained that ocean tides occur on Earth due to the gravitational attraction of the Sun and moon. He proposed a law called the Universal Gravitation Law that explained the phenomenon of tides on the Earth.

• Sir Isaac Newton

• Robert Angus Smith

• John Tyndall

• Nicolaus Copernicus

TIDES & ECLIPSES

TRUE OR FALSE

The water level in the sea does not always remain the same.

• TRUE

• FALSE

• BOTH

• SKIP

TIDES & ECLIPSES

_____ such as the Sun, Earth, and moon apply gravitational force on each other and on every object around them.

• Celestial bodies

• Celestials

• Planets

• Stars

TIDES & ECLIPSES

TRUE OR FALSE

The Earth revolves around the Sun and the moon revolves around the Earth in unfixed orbits.

• FALSE

• TRUE

• BOTH

• SKIP

Answer explanation

The Earth revolves around the Sun and the moon revolves around the Earth in fixed orbits.

TIDES & ECLIPSES

A source of light, an opaque object, and a screen are conditions required to make it. _____ are formed when an object blocks the path of light falling on another object or a screen.

• Shadows

• Light

• Gravity

• Force

GUESS THE ANSWER

Have you seen how the sea water moves right onto the shore and then moves farther away at different times of the day? This happens because of _____.

• Tides

• Eclipses

• Light

• Water

GUESS THE ANSWER

_____ are the periodic rise and fall of the water level in oceans and seas. They can also occur in large lakes and rivers.

• Tides

• Eclipses

• Light

• Water

TIDES

When the water level in the sea or the ocean rises, it is called _____.

• Low tide

• High tide

• Medium tide

• Extreme tide

TIDES

When the water level in the sea or the ocean falls, it is called _____.

• Low tide

• High tide

• Medium tide

• Extreme tide