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Solar System Intro
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------- are dirty-ice remains from the formation of our solar system. The ancients called these "hairy stars".
----- is the distance across the middle (or center) of a sphere.
------ is the ratio between the measurements on a map or model and the actual proportions of an object.
The first ----- planets are called the inner planets or the terrestrial planets.
----- are rocky fragments left over from the formation of the solar system.
The science of observing the sky is called -----.
------ is the region beyond Neptune where most comets come from.
The Asteroid Belt The Asteroid Belt
The Kuiper Belt
Most asteroids are found between Mars and Jupiter in an area called -----.
the Asteroid Belt
the Milky Way
the Kuiper Belt
the Oort Cloud
------planets have a solid surface.
Jovian planets, or gas giants, have a rapid ----- and many satellites.
If an object in space is smaller than the ------- and it orbits the Sun, we call the object a solar system body.
Which of the following planets is NOT a gas giant?
We discover about ---- new comets per year.
A ---- is a massive, sphere-shaped object in space that orbits a star and shines by reflecting the star's light.
A ---- is a physical feature of a planet's surface such as a mountain or plain.
------- are representations used to study objects, ideas or systems that are too complex, large or distant to study easily firsthand.
The curved path of a planet or moon around a central object is called its ------.
----- is the measure of the force of gravity on an object. This amount changes in outer space.
Which of the following planets is a terrestrial planet?
Ceres, Pluto, Makemake, Eris and Haumea are -------.
----- is a force of attraction between two objects. This is the force that pulls us toward the Earth.
------ are the preserved remains or impressions of organisms of Earth's geological past.
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