Science
Describe the solar system
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4.What is the most abundant element in the Sun? What is the second most abundant element in the Sun?
1. Hydrogen 2. Helium
What is the most abundant element in the Sun? What is the second most abundant element in the Sun?
1. Hydrogen 2. Helium
2.What is the Sun's diameter?
1.4million killometers
What is the Sun's diameter?
1.4million killometers
8.List five types of objects that orbit the sun.
1.planets 2.dwarf planets 3.moons 4.comets 5.asteroids
7.How are planets different from dwarf planets?
A dwarf planet does not have more mass than objects in nearby object but with a planet the mass of a planet must be much larger than the total mass.
6.What are the three criteria of all planets?
A planet: orbits around the sun The shape is spherical The mass of a planet must be much larger than the total mass
Name four dwarf planets and state what region of space they are each located in.
Ceres Eros Pluto and makemake
Name the outer planets in order (starting with the one closest to the Sun).
Jupiter, Saturn, Uranus, and Neptune.
12.Name the inner planets in order (starting with the one closest to the Sun)
Mercury, Venus, earth, and mars.
15.Define asteroid. What are three important facts about asteroids?
Millions of small rock objects There is an asteroid belts Range in size from less than a meter to several million kilometers
14.What are four important facts about dwarf planets?
Only some classify as a dwarf planet Are not moons A dwarf planet does not have more mass than objects in nearby orbits
1.Describe the solar system
Place full of planets
Define comet. What are three important facts about comets?
Small rocky objects Long glowing tail Made of gas dust and ice moves around the sun in an oval shaped orbit
What two factors determine the orbit of a planet? What would happen to a planet's orbit if it slows down? What would happen if it speeds up?
Speed and velocity. If it slows down it will fall. If it speeds up it will fling off.
Describe the shape of a planets orbit? Contrast this shape to a circle in terms of appearance and focal points. What is the focal point that all planets orbits have in common?
Spherical or elipses. Don't understand the rest of the question.
5.What is the process by which the Sun produces energy? Explain briefly how it works.
Sun gets energy from nuclear fusion. This is when the hydrogen atoms hit together so hard that they become helium which is energy.
3.How does the Sun's mass compare with the mass of the entire solar system?
Suns mass is 99% of the suns solar system
How does the Sun's mass compare with the mass of the entire solar system?
Suns mass is 99% of the suns solar system
10.Contrast the composition of inner and outer planets.
The composition is different. The inner planets are solid and rocky and the outer planets composition is ice and gas.
9.Contrast the relative distance to the Sun of the inner and outer planets.
The inner planets are closer to the sun the outer planets are farther from the sun.
11.Contrast the relative size of inner and outer planets.
The inner planets are smaller then the outer planets.
What two factors determine the amount of gravitational pull between objects? What are two ways you can increase the gravitational pull between two objects?
The moons gravity and the suns gravity.
Define "revolution".
The time it takes to travel around the sun once
Define "rotation".
The time that it takes to complete one rotation
Define asteroid. Where are most of the asteroids located? Where is this in relation to the planets?
They are mostly located in the asteroid belt. They are all in the Solar System.
Define astronomical unit. State its length. Explain why it is used.
Used because numbers would be way to big to do anything with And The average distance from earth to the sun-about 150million kilometers. And Kilometers
Explain the relationship between a planet's speed and its distance from the Sun.
When a planet is closer to the sun it is slower but when it is farther it is faster