Science presentation

Science Presentation

Titles1.The cause of day and night

2.What causes seasons

3.The length of a year

4.What causes the phases of the moon

Titles

1.What causes day and night

2.What causes seasons and the length of a year

3.What causes the phases of the moon

4.The lunar cycle

What causes day and night?

The Earth is constantly spinning on its axis, allowing sunlight to shine on different areas of the Earth at different times of the day, creating daytime when the Sun hits a specific area. When the Sun is not shining on a specific area of the Earth, it is nighttime. Since the Sun does not hit all of the Earth at the same time, it is daytime in some parts of the world, while it is nighttime in others

Note: it takes the earth 24 hours to spin on it axis

The seasons are caused by the tilt of the Earth's rotational axis away or toward the sun as it travels through its year-long path around the sun.

The length of a year is 365 and a ¼ days

What causes seasons and the length of a

year?

What causes the phases of the moon?

It takes the moon 29.5 days to make one complete orbit around the Earth. phases of the Moon depend on its position in relation to the Sun and Earth because the moon does not make its own light it reflects the light of the sun. As the Moon makes its way around the Earth, we see the bright parts of the Moon's surface at different angles. These are called "phases" of the Moon. A new moon occurs when the moon is positioned between the sun and Earth. No sunlight is being reflected off of the moon, so we are not able to see it. A full moon occurs when the moon is positioned on the other side of Earth. The sun, Earth, and the moon are lined up, so that the moon is fully illuminated by the sun

The lunar cycle

Done by : Shahd Hossam

Class : 6A