Grade 5: Science-SolarSystem Flashcards
The Sun is found in what Galaxy
Milky Way Galaxy
The Sun is made mostly of…
Hydrogen (72%) and Helium (26%)
Temperature at the center of the Sun is
15,000,000 C (27,000,000 F)
What is Thermonuclear Reaction
When Hydrogen atoms constantly combine to form Helium atoms; which creates Heat and Light Energy
What are the Terrestrial Planets
4 planets closest to the Sun: Mercury, Venus, Earth and Mars
Name the 4 planets in the order closest to the Sun
Mercury, Venus, Earth, Mars
Describe Mercury planet
closest to the Sun, smaller than Earth, Mercury has no Satellite (moon), has many craters, no water or atmosphere, side facing the Sun is very Hot and dark side is very Cold
Describe Venus
2nd planet from the Sun, size of Earth, no satellite, no liquid water on Venus, dense clouds (of carbon dioxide), very dry and cracked with many volcanoes
Describe Earth
3rd planet from the Sun, mild temperature all the time, has a satellite called the Moon (or Luna), has liquid water, has life.
Earth’s atmosphere is made up of…
Nitrogen and Oxygen
Moon orbits the Earth
once a month
Moon is responsible for what on Earth
Tides in Earth’s Oceans
Earth is how far from the Sun
150 Million Kilometers (93 Million Miles)
Describe the Sun
The Sun is a very big Star that gives out heat and light and it is made out of 72% Hydrogen and 26% Helium
What is the Solar System
the Solar System contains Terrestial Planets, Gas Giants, the Sun, Asteroid Belts, Moons and Comets
Which Planets are Gas Giants
Jupiter, Saturn, Uranus, Neptune
What is the Kuiper Belt and what is found there
It has all the dwarf planets (Pluto, Eris), and comets, metal, dusts
Which Planet has the most Satellites orbiting
Jupiter has the most moon; 63 Moons
How are asteroids and comets alike and different
They are both chunks of rocks. Comets look like dirty snow balls and asteroids look like rocks
The Sun is _____ ______, composed mostly of ____ ( __ %) and ____ ( __ %) around which the ____ ___ ____ _____
The Sun is average star, composed mostly of Hydrogen ( 72%) and Helium ( 26%) around which the other solar system bodies revolve around
The ___ ___ is the ___ and all the __ that ___ it including __ and their ___, ___, and ____
The Solar Systems is the Sun and all the bodies that orbit it including planets, and their moons, asteroids, and comets
Define Gravity
the force of attraction between two objects.
Larger objects, like the Sun, have a greater force of gravity
Gravity pulls….
Gravity pulls on planets with a force which changes the planets’ direction of travel from a straight line into a circle
Name the planets in the order of size (from largest to smallest diameter)
Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury
Name the planets in the order of shortest to longest orbit time
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Name the planets in the order of closest to farthest from the Sun
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Name the planets in the order of the highest to lowest surface temperature
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
