Gravity
This force pulls objects with mass toward one another.
What is gravity?
This is the amount of matter in an object.
What is gravity?
These four planets are the inner planets in order from distance from the Sun.
What are Mercury, Venus, Earth, and Mars?
This planet is closest to the Sun.
What is Mercury?
Earth's axis is tilted by about this many degrees.
What is 23.5 degrees?
As this property of an object increases, its gravitational pull increases.
What is mass?
This measures the force of gravity on an object.
What is weight?
These four planets are the outer planets in order from distance from Sun.
What are Jupiter, Saturn, Uranus, and Neptune?
This "Red Planet" has violent dust storms.
What is Mars?
When it is summer in the Northern Hemisphere, it is this season in the Southern Hemisphere.
What is winter?
This object has the strongest gravitational pull in our solar system.
What is the Sun?
This stays the same whether you are on Earth or the Moon.
What is mass?
This belt lies between Mars and Jupiter.
What is the asteroid belt?
This planet is famous for its rings and is the least dense planet.
What is Saturn?
This event marks the longest or shortest day of the year.
What is a solstice?
A 150 poun object on Earth would weigh 354.6 pounds on Jupiter but only 56.5 pounds on Mars. Which planet has the stronger gravitational pull, and what evidence supports your answer?
What is Jupiter? The object weighs much more there.
An astronaut's weight is lower on the Moon than on Earth. What happens to the astronaut's mass, and why?
What is it stays the same because the amount of matter in the astronaut has not changed?
An unknown planet is smaller than Jupiter, has a rocky surface , and orbits closer to the Sun than the asteroid belt. Which planet group does it fit, and which two clues support your choice?
What are the inner planets? Its rocky surface and location inside the asteroid belt support the choice.
A student mixes up Venus and Earth becuase both are inner planets. Give one fact from the notes that identifies Venus and a different fact that identifies Earth.
What is Venus is called "Earth's Twin" because of it similar size; Earth has water and is about 70% covered by it?
In December, in the Northern Hemisphere, predict the season and relative length of daylight in both hemispheres, then explain the difference.
What is the Northern Hemisphere has winter and shorter days, while the Southern Hemisphere has summer and longer days, because it is tilted toward the Sun?
Imagine the Sun's gravitational pull became much weaker . Would the planets continue following the same orbits? Explain your reasoning?
What is no? The Sun's gravity helps keep the planets in order, so weaker gravity would change their paths.
Two students say, "A 150 pound object would have less matter on MArs because it weighs only 56.5 pounds there." Identify the mistake and explain the lower reading.
What is its mass, or amount of matter, stays the same; its weight is lower because Mars has weaker gravity?
A spacecraft travels outward from the Sun. It passes the last inner planet, crosses the asteroid belt, and continues to the third outer planet. Name the last inner planet, the first outer planet, and its destination in that order.
What are Mars, Jupiter, and Uranus, in that order?
Identify both planets; one has the shortest day of any planet; the other rotates on its side.
What are Jupiter and Uranus?
These two events have approximately equal hours of daylight and darkness.
What is vernal and autumnal equinox?