By: Brenna Matthews
What causes day and night on Earth? The rotation of the earth on its axis causes day and night.What is Earth’s rotation on its axis and how long does it take the Earth to rotate once? The Earth’s rotation is it spinning on its axis and its takes 24 hours to complete one full rotation.What is Earth’s revolution around the Sun and how long does one revolution take? The revolution of the earth is when the Earth goes around the sun and it takes approximately 365.25 days to complete one full revolution.What are the two reasons we have seasons on Earth? The tilt of the earth and the revolution of the Earth around the sun cause the seasons.What is the difference between seasons in the northern and southern hemispheres? The difference in the seasons between the northern and southern hemispheres is they are opposite. Ex: Summer – Northern Hemisphere Winter – Southern Hemispheres What is the difference in the length of days between our summer and winter months?What are the winter and summer solstices and when do they occur? The Summer Solstice is the longest day of the year: it occurs on June 21st. The Winter Solstice is the shortest day of the year: it occurs on December 21st. What are the spring and fall equinoxes and when do they occur? It is when the plane of elliptic passes the center of the sun. The spring and fall equinoxes are – they occur on March 21 (S) and September 21 (F).How long are the days at the North and South Poles during their summer months and why? The north and south poles have 4 seasons, but they only come into effect in winter. They don't get enough sunlight to tell the difference. How long are the days throughout the year at the equator and why? The equator doesn't have seasons like us. The countries on the equator have wet and dry seasons. This is because the closer to the equator the hotter it gets. What would it be like if the Earth was not tilted on its axis? If the earth wasn’t tilted on it axis we wouldn’t have any seasons because the land close to the equator would always be summer since it’s getting the most direct light and the poles would be winter because its getting no indirect light.
What do you think would happen if the Earth was titled to a greater degree? I think if the Earth was tilted to a greater degree the seasons would be more extreme. For a very a long time the earth has been tilted this way if it were to change then all of the temperatures we are used to experiencing would change to possibly life-changing. Do you think there are any naturally occurring events that could cause seasons to change? Yes, earthquakes can change the tilt – a scientific theory says that a earthquake once changed the tilt of the earth.What do you think would happen to seasons on Earth if we were closer to the Sun? I feel like all the seasons would gradually get warmer, such as summer becoming hotter and etc. When the seasons change does the length of your shadows change? Explain your thinking. Yes, so the length of our shadow changes throughout the day because of the “placement of the sun” (where the sun is in the sky). In the summertime we get more direct sunlight so wouldn’t the length of the shadow increase – same as it decreasing during the winter. How do you think organisms (plants and animals) are able to understand the change in seasons (Bear going into hibernation; plants starting to lose leaves) . The change in temperature and the change in the sunlight. What effect would a faster revolution have on Earth’s seasons? The seasons would be shorter and we would either have 2 of each season per year or the years would be shorter.