Can shadows be formed when there is no source of light?
NO
What are the three things that the size and clarity of the shadow depend on?
1. Sizes of the object and the source of light
2. Distance between the object and the source
3. Distance between the object and the screen
Is orbit an imaginary path or real matter?
Imaginary path
What is rotation?
The spinning movement of the Earth around its axis is called rotation.
When does a solar eclipse occur?
A solar eclipse occurs when the moon comes between the Earth and the Sun such that the shadow of the moon is cast on the Earth.
Shadows are always form on the ________ side of the source of light
opposite
During the morning and late afternoon shadows are the ________.
During the morning and late afternoon shadows are the longest.
How many days does the earth take to revolve around the sun?
365 day and 6 hours
How much time does Earth take to complete one rotation?
24 hours
What is a total solar eclipse?
A total solar eclipse occurs when the sun is totally hidden by the moon.
A shadow is always __________ in color.
Black
Shadows are the ________ at noon when the sun is overhead.
Shadows are the shortest at noon when the sun is overhead.
What helps in the change of seasons?
Revolution helps in the change of seasons.
Why is the rotation of the Earth important?
The rotation of the Earth is important as it causes the formation of day and night.
What is a partial solar eclipse?
A partial solar eclipse occurs when only a portion of the sun is hidden behind the moon.
During night, if there is total darkness, will a shadow be formed?
No
What is an orbit?
Earth is a planet that moves around the sun on a fixed path called an orbit.
The earth spins around its_________.
The earth spins around its axis.
When India has day, what does USA have?
Night
Looking at the sun directly during a solar eclipse may lead to __________ damage of the eyes.
Looking at the sun directly during a solar eclipse may lead to permanent damage of the eyes.
Will the details of an object be visible in a shadow?
No , only the outline will be seen.
What is revolution?
The movement of the Earth around the sun in its orbit is called revolution.
What is the Earth's axis.
The earth's axis is an imaginary line that passes through its centre.
What is an eclipse?
An eclipse is an event that occurs in the sky when a celestial body is partially or completely hidden by another celestial body. This happens when three celestial bodies are in a line.
What is a lunar eclipse?
A lunar eclipse occurs when Earth comes in between the sun and the moon such that the shadow of Earth is cast on the moon.