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28 Cards in this Set

  • Front
  • Back
Name the objects in our solar system.
Objects in our solar system are ...

- stars,
- planets,
- moons,
- asteroids, and
- comets.
How are the length of a year and the planet's distance from the sun related?
The planet's year and distance from the sun are related as ...
a planet's year is shorter the closer its orbit is to the sun, because it travels around the sun more quickly. The distance of the orbit around the sun is shorter.
What is a sunspot?
A sunspot is...
- a dark area that is cooler than the rest of the sun's surface and
- that does not give off as much heat.
Why is Earth's rotation important to our planet?
Earth's rotation on it's axis causes day and night.

The side of the Earth that faces the sun has...
-day and
the opposite side has night.
What is a solar system?
A solar system is a group of objects that move around a central star.
What is a year?
A year is the time taken to complete on complete orbit by a planet around the sun.
What is are prominences?
Prominences are ...

- red streams and loops of gases that shoot out from the sun's surface.
- These hot fountains often occur near a sunspot.
- Prominences and sunspots usually last a few days, however some have been known to last a few months.
What is an example of an orbit?
An example of an orbit is..
a planet (an object) travels in a path around a sun (a second object).
What are two features of the sun's surface?
Two features of the sun's surface are ...

- sunspots and
- prominences.
Where in our solar system are the planets with faster orbits?
Planets with orbits closer to the sun move faster around the sun than those with orbits that are farther away.
What are characteristics of our sun?
Our sun is...

- the largest object in our solar system,
- a fiery ball more than 1 million kilometers (621,000 miles) in diameter,
- provides almost all of the energy in our solar system.
Science : Our Solar System

Jonathan Sams
Pine View School
Fourth Grade
Ms. Noonan
The sun provides what type form of energy to Earth?
The sun provides energy in the form of light and heat to Earth.
Are orbits around planets circles?
No, orbits around planets are not circles. Orbits are slightly elliptical or oval in shape.
What is an example of a large star in our solar system?
Our sun is an example of a large star.
What is an orbit?
An orbit is the path an object takes when it revolves aroung another object.
What is a star?
A star is a burning sphere of gases.
What happens when a comet's orbit takes it close to the sun?
When a comet's orbit takes it close to the sun, some of the ice on the comet's surface changes to water vapor and streams out to form a long, glowing tail.
What is a moon?
A moon is a natural satellite or object that moves around a planet.

What is the imaginary line that runs through both poles of a planet?
The axis is the imaginary line that run through both poles of a planet.

As Earth revolves around the sun, it spins, or rotates, around a imaginary line.
What is a planet?
A planet is a large object that moves around a star.
What is our solar system made up of?
Our solar system is made up of ...

- the sun,
- nine planets and their moons,
- asteroids and comets.
What are the names of the planets in our solar system from nearest to farthes?
The planets in our solar system from nearest to farthest are ...
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto.
What is an asteroid?
An asteroid is a small rocky object that moves around the sun.
The sun is the largest object in our solar system. What is the next largest object in our solalr system?
Juptier is the next largest object in our solar system after the sun.
What is a comet?
A comet is a small mass of dust and ice that orbits the sun in a long, oval-shaped path.
What do some scientists believe that asteroids are?
Some scientists believe that asteroids are pieces of a planet that never formed.
What percent mass is the sun of our solar system?
The sun is 99.8% of our solar system.