Science 4.2 Flashcards
(27 cards)
A True statement is that Planets_______________________
shine by reflected light
The Planet that is located CLOSEST to the Sun is ______________
Mercury
The two planets that orbit between the Sun and Earth are ______________- and ____________________
Mercury and Venus
The RED planet is ___________________
Mars
Earth has _____________________
One natural satellite
The head of a comet is composed of____________________
Frozen gases and Dust
The number of moons in our solar system is ______________
Greater or Bigger than the number of Planets
Our solar system consist of __(how many)________________ planets.
Eight
In general, planets revolve around the sun in a _____________________________ direction.
Counter Clockwise
A dwarf Planet is ____________________________
Pluto
The largest planet in the solar system is ______________________
Jupiter
The planets which lie beyond the asteroids are called the______________________
Jovian ( outer)
The Planet known as the morning or evening star is ______________________
Venus
The Earth and the sun are about _________________Km apart
150,000,000
A planet that is characterized ( described by) rings of ice particles is ______________________.
Saturn
As the comet approaches the Sun, its tail points ________________ the sun.
away from
Ancients called the planets __________________.
wanderers or Planetae
The spinning motion of a planet on its axis is called_____________________.
rotation
The time required by a planet to make one complete turn on its axis represents a _____________ on that planet.
DAY
The planets move around the sun in ________________ orbits.
elliptical
The four Planets closest to the sun are called the _______________- planets
terrestrial or inner
The Center of the solar system in the ______________________
Sun
Explain how all life on earth depends on energy from the sun
Photosynthesis is necessary for plants to produce food. This food is necessary to animal life either directly through eating animals that eat plants. Photosynthesis depends on light energy. We could NOT live without heat energy to warm the Earth, create climate, and so forth.
Explain the source of the sun’s energy is the carbon cycle.
A six step reaction in which FOUR (4) hydrogen nuclei fuse to form one (1) helium nucleus. The carbon atom is involved as a catalyst. Vast energy is released in the carbon cycle.
