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Test 7: Celestial Ob

Test 7: Celestial Objects, gravity and Space Expolration

The celestial ____ that is the center of our solar system, around which every object orbits is the Sun. body
Between the orbits of Mars and _____ is where most of the asteroids in our solar system are located. Jupiter
The composition of the Sun is best described as being _____ and composed of hot gases. dense
All of the inner planets are _____ and terrestrial. rocky
A _____ is a visible streak of light which shows the path of a rocky object which has entered Earth's atmosphere. meteor
Planets in the _____ system follow an orbital path which is most accurately describes as more or less elliptical. solar
The Earth rotates around the Sun and the _____rotates around the Earth. moon
Planets vary as they get farther from the Sun. Generally the farther a planet's orbit from the Sun, the longer it takes to ______ the Sun. orbit
The _____ of all the planets in our solar system is more or less the same. shape
_____ governs the motion of our solar system. Gravity
A _____ has a tail and is generally composed of ice, rock, and frozen gases. comet
Gravity can be defined as the _____ of attraction between two or more masses. force
Mass and _____ affects the strength of the gravitational pull on two objects. distance
To have the _____ gravitational attraction between two masses, they will have the largest distance between them and the largest difference in mass. smallest
The _____ between the motion of the bodies and gravitational forces determines the orbital paths of objects in our solar system. balance
The _____ is a scientific tool that has allowed humans to see better and farther into space. telescope
Some scientists are planning a manned space mission to a rock planet slightly farther from the Sun than Earth. The planet is known as _____. Mars
A supply of _____ for the astronauts, is an important requirement for a manned spacecraft traveling through space. oxygen
Astronauts wear space suits, which provide oxygen, protection, and ______. communication
The International Space Station helps scientists learn how to solve _____ of living in space. problems
A space probe, a _____, and a manned rocket can all communicate with people on Earth. satellite
Until technology discovers a way, _____ to the closes star in another solar system is not possible for a human crew due to the relatively short human life spans and slow travel speeds. travel
The advantage of using telescopes launched into space is the _____ are usually clearer because they do not have to look through our atmosphere. images
Rockets must have enough _____ to overcome Earth's gravity, so humans may explore space. thrust
Created by: oakhills