Seasons
Earth's Rotation
Gravity
Tides
Sun, Moon, and Tides
100
Which season has days with the most hours of daylight?
Summer, longer days
100
When is the sun at equal heights in the sky in the Northern Hemisphere and Southern Hemisphere?
The sun is at equal heights in the sky in the Northern Hemisphere and Southern Hemisphere during an equinox
100
What factors determine how strong the force of gravity is between two objects, such as Earth and the moon?
Mass and distance
100
What are tides?
Tides are the regular rise and fall of the sea surface caused by the gravitational pull of the moon and the sun
100
What effect does the moon’s gravity have on tides?
Ocean tides are caused by the Moon's gravitational pull.
200
What causes seasonal changes on earth?
Tilted Earth rotating around the Sun, different parts of the Earth are pointed toward the Sun
200
What are two conditions that cause temperatures to be cooler in winter than during other seasons in the Northern Hemisphere?
Because the Sun's energy is more spread out during that season, resulting in less intense sunlight and shorter days.
200
What is gravity?
Gravity is a force that pulls objects toward each other. It's the reason why things fall to the ground on Earth, and it also keeps the planets, moons, and stars in orbit.
200
Explain how storm surge can affect water levels at both high and low tides.
Storm surge is water pushed toward the shore by the force of winds during a storm. It can combine with normal tides, which can increase the average water level by 15 feet or more
200
How do the full moon and new moon affect tides and why?
Twice a month, when the Earth, Sun, and Moon line up (new moon and full moon), their gravitational power combines to make exceptionally high tides, called spring tides, as well as very low tides where the water has been displaced.
300
What seasons occur in the Northern and Southern hemispheres in late December?
Norther Hemisphere = winter
Southern Hemisphere = summer
300
What are two ways Earth moves?
Rotation and Revolution
300
How does the Moon's gravity affect Earth?
The Moon’s gravity pulls on Earth’s oceans, creating tides. As the Moon moves around Earth, its gravity causes the water to rise and fall, leading to high and low tides.
300
In what body of water do tides occur?
Oceans
300
How often do neap and spring tides occur?
About twice a month (29.5 days)
400
Why does Earth have changing seasons?
As Earth revolves and rotates around the sun, different parts of the Earth are tilted toward the Sun, the parts that are experience summer, the parts that are tilted away experience winter. In between they are either in fall or spring.
400
What changes are caused by the Earth's revolution?
Seasons (365 days=1 year)
400
Which has a stronger effect on Earth’s tides: the Moon or the Sun?
The Moon has a stronger effect on Earth’s tides than the Sun because the Moon is much closer to Earth, even though the Sun is much larger.
400
How often do tides occur?
Every 6 hours.
400
How often does the moon orbit Earth?
Every 29.5 days
500
What happens in fall? Does the number of daylight hours increase, decrease, or stay the same?
Days are getting shorter, daylight hours decrease
500
What changes are caused by the Earth's rotation?
Day/night (24 hours)
500
Can tides affect the land or just the ocean?
Tides mostly affect the ocean, but they can also slightly pull on the land. However, the effect on land is much smaller and usually not noticeable.
500
When do neap tides occur?
First and third quarter moon
500
How long does it take the moon to make one rotation on its axis?
Every 29.5 days