Show:
Vocabulary
Shadows
Seasons
Revolution/Rotation
Potpourri
100
In what layer of the atmosphere does the weather take place?
Troposphere, the closest layer to the Earth
100
In what season and at what time of day would your shadow be the shortest?
Summer at 12:00 NOON
100
What causes the cycle of the seasons?
Earth being tilted on its axis as it orbits the sun
100
What is the imaginary line around which the Earth rotates? How many degrees is this line tilted?
Axis 23.5 degrees
100
Why does the sun appear to rise each morning and set each evening?
This is due to the Earth’s rotation on its axis – the sun does NOT move.
200
What is the atmosphere?
Layer of gases that surrounds the Earth and is comprised of 4 layers
200
Would your shadow be longer at 3:00 pm on March 21 or September 21 in the northern hemisphere?
September 21 because we would be approaching winter when the sun is lower in the sky.
200
Why do the hours of night increase in the winter and fall?
During the fall, the sun begins to appear closer to the Earth (lower in the sky), creating a shorter path for it to travel across the sky. This results in a decrease in the amount of daylight we receive during the fall and winter.
200
How long is the rotation of the Earth? (Name length of solar day AND sidereal day.)
Solar day: 24 hours Sidereal day: 23 hours, 56 minutes
200
Draw a diagram of what the Earth and sun look like when the Northern Hemisphere is experiencing winter.
Northern Hemisphere should be tilted away from the sun.
300
What is a satellite? Give an example.
Any object/body that revolves around another object/body Example: The moon is a satellite of Earth
300
How does your shadow change throughout the course of the school day?
Long when we arrive, then grows shorter until lunchtime, then continues lengthening until dismissal
300
Why do the hours of daylight get longer in the spring and summer?
As we approach summer during the spring, the sun begins to appear higher in the sky, creating a longer path for it to travel across throughout the day. This causes longer amounts of daylight during the spring and summer.
300
How long is the Earth's revolution period? How do we account for this?
365 1/4 days Leap year every 4 years when an extra day is added to February
300
Draw a diagram of what the Earth and sun look like when the Northern Hemisphere is experiencing spring.
Earth should not be tilted toward or away from the sun; sun should be shining directly on equator.
400
What are the fall and spring equinoxes? (Discuss position of sun, amount of daylight, and dates)
Sun is lined up with the equator. 12 hours of daylight, 12 hours of darkness September 21 (fall in Northern, spring in Southern) March 21 (spring in Northern, fall in southern)
400
Where and when would you cast the longest shadow? Why? Christmas morning in Ohio? Christmas morning in Brazil? Noon on the 4th of July in Ohio? Noon on the 4th of July in Brazil?
Christmas morning in Ohio: shadows are longest during winter AND long during the morning and evening
400
If it is winter in the northern hemisphere, describe the length of the days/nights and the temperatures in the southern hemisphere.
Long days/short nights Warm temperatures because it is SUMMER
400
Which planet has the shortest year (revolution period)? The longest?
Mercury;Neptune
400
In which layer of the atmosphere do jets/airplanes fly?
Stratosphere
500
What is the winter solstice? (Discuss dates, hemispheres, amount of daylight)
December 21 for Northern Hemisphere June 21 for Southern Hemisphere Shortest day of the year Sun is lowest in the sky
500
Why would your shadow be longer at 9:00 am on a winter day than a summer day? (Do not say because shadows are longer during winter than summer)
During the winter, the sun is appears lower in the sky, therefore shining on objects at more of an angle and creating longer shadows.
500
Describe how the sun’s rays hit the northern hemisphere throughout the cycle of the seasons.
Winter: tilted away from the sun, sun is not shining on our hemisphere, we receive indirect sunlight causing colder temperatures Summer: tilted towards the sun, sun is shining on our hemisphere, we receive direct sunlight causing warmer temperatures Fall/Spring: sun’s rays directed on equator, not on either hemisphere
500
Which planet has the longest day (rotation period)? Which planet has the shortest day?
Venus; Jupiter
500
What does the ozone layer protect us from? What layer is it located in?
Harmful, UV rays Stratosphere