Term 2 EXAM topics Flashcards
What is the length of time required for the Earth to orbit the Sun?
365 Days, 6 Hours & 9 Minutes.
What is the length of time required for the Moon to orbit Earth?
27.3 Days
What is the definition of a revolution?
The movement of an object in a circular or elliptical course around another object or axis.
What is the definition of revolve?
To move in a circular or curving path around another object or axis.
What is the definition of rotate?
To turn in a circle around an axis.
What is the definition of a rotation?
The action of rotating/spinning around an axis.
What is a solute?
The dissolved substance in a solution.
What is a solvent?
A substance capable of dissolving one or more other substances to create a solution.
What is a solution?
The mixture formed when a substance (or substances) dissolves into another.
What order are planets from the sun?
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. (My Very Educated Mother Just Served Us Nine pizzas. (Minus Pluto.) )
How does gravitational pull affect the amount of time it takes a planet to orbit the sun.
The closer a planet is to the sun, the stronger the sun’s gravitational pull on it, therefore speeding up the time it takes to orbit the sun.
What is the role of gravitational pull?
Gravitational pull keeps celestial bodies such as planets, moons and stars in orbit around each other, ie. Planets in our solar system orbiting around the sun. The gravitational pull of the moon also affects sea tides on the earth.
How do seasons occur?
Earth’s axis is on a tilt, which affects the way sunlight hits the Earth. As Earth orbits the Sun, its tilted axis always points in the same direction. So, throughout the year, different parts of Earth get the Sun’s direct rays. This is also why the southern hemisphere experiences summer at the same time the northern hemisphere experiences winter.
