Gravity + The Moon Flashcards
(28 cards)
Can you calculate weight on other planets? If so how?
Weight = mass x gravity
Can you explain how the moon creates tides?
The Moon’s gravitational pull creates tides on Earth by causing the oceans to bulge out on both the side closest to and farthest from the Moon
Define high tides
the time when the water level is at it highest and the water reaches higher up the beach or bank. It is high because of the gravitational pull of the moon.
Define neap tide
When the Sun is at a right angle to the Moon, moderate tides, called neap tides, result. This happens 7 days after a spring tide.
Define spring tides
Twice a month, when the Earth, Sun, and Moon line up, their gravitational power combines to make exceptionally high tides, called spring tides, as well as very low tides where the water has been displaced. (It has nothing to do with spring the season)
Describe how the positions of the moon and sun affect the size of the tide on earth.
Twice a month, when the Earth, Sun, and Moon line up, their gravitational power combines to make exceptionally high tides, called spring tides, as well as very low tides where the water has been displaced. When the Sun is at a right angle to the Moon, moderate tides, called neap tides, result.
Describe the differences between a partial and total solar eclipse
In a total solar eclipse, the moon completely blocks the sun, causing a brief period of darkness, while in a partial solar eclipse, the moon only partially covers the sun, resulting in a crescent-shaped or notched appearance
Explain how the positions on the Earth, Sun and moon cause eclipses
Eclipses occur when one celestial body blocks light from another, and there are two main types: solar and lunar.
Solar eclipses happen when the Moon passes between the Sun and Earth, casting a shadow on Earth
Lunar eclipses occur when Earth passes between the Sun and Moon, casting a shadow on the Moon.
How do you calculate gravitational field strength
Weight ÷ mass
How do you calculate weight?
Mass x gravitational field strength
How does gravity control the tides
The moon’s gravity primarily controls tides, causing ocean water to bulge out on both the side closest to and farthest from the moon, resulting in high tides, while the areas in between experience low tides
How does mass affect gravitational pull?
The greater the mass the stronger the gravitational pull. The lesser the mass the lesser gravitational pull
How does the positioning of the Earth and sun create seasons?
As the Earth orbits the sun, different parts of the planet are tilted towards or away from the sun, resulting in different amounts of direct sunlight.
What angle does earth tilt at on its axis?
23.5°
What are the different phases of the moon
There are 8 phases:
1. new moon,
2. waxing crescent,
3. first quarter,
4. waxing gibbous,
5. full moon,
6. waning gibbous,
7. third quarter
8. waning crescent.
https://images.app.goo.gl/KLUWUe5ii6TmFmGZ7
What does earth do in one day?
In one day earth completes one rotation on its axis
What does earth do in one year
Completes one full orbit around the sun (excluding the quarter of a day of orbit resulting in the need for a leap year day every 4 years)
2. Experiences a full cycle of seasons due to its tilted axis
What is the correct unit of measurement for gravitational field strength
N/kg
What is the correct unit of measurement for mass
Kg
What is the difference between weight and mass?
Mass is how much matter an object contains. It is constant irrespective of location. weight is the force exerted on a mass by gravity. It changes from place to place.
Which has a greater gravitational field strength - earth or moon
Earth
