AST101 Clicker Quizzes UofT with 100% Correct Answers

AST101 Clicker Quizzes UofT with 100% Correct Answers What does the term "Solar System" mean? - Answer- The Sun, the planets, and all of their moons What does the term "Universe" mean? - Answer- The totality of all space, time, energy, and matter Earth is 1 AU from the Sun. What is the maximumpossible separation between Earth and Mars? (Hint: Mars is the next farthest planet from the Sun) - Answer- 2.5 AU A 'light year' is a measure of: - Answer- distance Stars are... - Answer- balls of plasma which produce energy by nuclear fusion. Planets are.. - Answer- rocky, icy, or gassy, and they don't produce much energy. Why is Pluto no longer considered a planet? - Answer- Its orbit is full of other stuff Definition of the term "planet" - Answer- Planets must have cleared their orbits. That is, there can't be a lot of other stuff orbiting the parent star in orbits very similar to the planet. A moon is ... - Answer- any large body which orbits a planet. Titan is a rocky/icy object with an atmosphere and liquid on its surface. It is spherical in shape, has a clear orbit, and orbits Saturn. Titan is a ... - Answer- moon Ceres orbits the Sun in the asteroid belt between Mars and Jupiter. It is large enough to be spherical. Ceres is a... - Answer- dwarf planet A solar system consists of ... - Answer- a star orbited by planets, moons, and lots of debris (comets, asteroids, dust) The Inner Solar System... - Answer- Mercury, Venus, Earth, Mars The Outer Solar System... - Answer- :Jupiter, Saturn, Uranus, Neptune, many dwarf planets & comets How many stars are there in our Solar System? - Answer- one, the sun The terrestrial planets are called - Answer- Mercury, Venus, Earth, Mars The terrestrial planets are - Answer- Rocky, relatively small, close to Sun The jovian planets are called - Answer- Jupiter, Saturn, Uranus, Neptune The Jovian planets are - Answer- gaseous, larger, and farther away from the Sun Compared to planets in the inner Solar System, planets in the outer Solar System generally - Answer- are made of lighter elements What is it like on Mercury - Answer- No atmosphere, highly cratered surface, Rocky exterior with a huge iron core What is it like on Venus - Answer- Thick CO2 atmosphere, lots of (possibly) active volcanoes. About the same size as Earth, Runaway greenhouse effect makes it even hotter than Mercury, Rains acid, No moons What is it like on Earth - Answer- Wet planet, Unusually big moon•Surface and atmosphere heavily modified by life What is it like on Mars - Answer- Very thin CO2 atmosphere•Many huge, extinct volcanoes, Was probably warmer and wetter in the past, Many surface features probably carved by water, No life known to date The planet with the highest average surface temperature is... - Answer- Venus Scientists announce the discovery of a new planet in another solar system. The planet is the same size as Earth and orbits a star just like the Sun at a distance of 0.9 AU. Based on our own solar system, what can we conclude about this planet? - Answer- It will be made mainly of rock. The asteroid belt is - Answer- A zone where rocky chunks orbit the sun between the orbits of Mars and Jupiter. What is it like on Jupiter - Answer- Largest planet in the solar system, Thick gaseous atmosphere surrounds a giant ball of liquid hydrogen, and has very faint rings What is it like on Saturn - Answer- Spectacular rings, More than 60 known moons if you tried to land a space ship on a Jovian Planet, what would happen first? - Answer- You'd be crushed by the tremendous gas pressure. What is it like on Uranus and Neptune - Answer- ice giants, Both about the same size, Both bluey/green, Both have many moons, Both have faint rings The Kuiper Belt - Answer- A region of the solar system that is just beyond the orbit of Neptune and that contains small bodies made mostly of ice The Oort cloud - Answer- A spherical region of comets that surrounds the solar system, Larger then the Kuiper belt