Our Solar System
Terms
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Frozen masses of gas and dust which have a definite orbit through the solar system.
- comet
- A magnetic storm on the the Sun's surface which appears as a dark area. A sunspot is approximately 1500 degrees Celsius cooler than it's surrounding material. The number of sunspots we see on the Sun at any given time appears to cycle every 11 years.
- sunspot
- Name the inner planets known as the rocky planets.
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Mercury
Venus
Earth
Mars -
A theory which states that the Universe began to expand after a super powerful explosion of concentrated matter and energy.
- The big bang theory
- Name the Earth's only satellite?
- the moon
- The area in which an attractive or repelling force exists between two magnets or in association with the element iron. The Earth's magnetic field is thought to be due to the liquid iron-nickel which is in its core. This magnetic field protects Earth from
- magnetic field
- Which planet is known as Earth's twin?
- Venus
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Usable heat or power; in physics, it is the capacity of a physical system to perform work.
- Energy
- How much of the Earth's surface is covered by water?
- 70%
- The force of attraction between two objects which is influenced by the mass of the two objects and the distance between the two objects
- gavity
- The Sun and all of the planets, comets, etc. which revolve around it.
- Solar System
- Name the outer planets.
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Jupiter
Saturn
Uranus
Neptune
Pluto - A continuous stream of charged particles which are released from the Sun and hurled outward into space at speeds up to 800 kilometers per second. Solar winds are very prominent after solar flare activity
- Solar Wind
- A shadow which falls on an area of Earth when the Moon moves between the Sun and Earth.
- SOLAR ECLIPSE
- The measure of the amount of matter in an object.
- mass
- How many planets are there in our solar system?
- nine
- Is rotation how a planet spins on its axis or the path it takes around the sun?
- spins on its axis
- Anything which has mass and occupies space.
- Matter
- Why does the Earth have seasons?
- because of the tilted axis and revolution
- The orbits of the planets are not circular they are ______.
- elliptical
- The process by which plants use carbon dioxide, nutrients, and sunlight to produce food.
- PHOTOSYNTHESIS
- How long does it take for the Earth to turn one time on its axis?
- 24 hours
- How long does it take the Earth to make one revolution around the sun?
- 365.26 days
- Which planet is furthest from the Sun?
- Pluto
- When is the longest day of the year?
- summer solstice
- The time is takes for a planet to make one complete trip around the sun is its period of __________.
- revolution
- Tides are caused mainly by the_______.
- gravity of the moon.