Gravity
Gravity is a(n) ________ force.
(Repulsive, attractive, sideways, fake)
Gravity is an attractive force.
Why does the Sun appear brighter than other stars in the sky?
The sun appears brighter because it is closer than any other star.
Why do we experience seasons on Earth?
We experience seasons on Earth because of the tilt of the Earth's axis.
During which phase of the moon does a lunar eclipse occur?
A lunar eclipse occurs during a full moon.
What would be the best method to observe and compare the differences between objects in space?
The best way to observe and compare the differences between objects in space would be to build a model of the objects TO SCALE.
If the distance between two objects increases, the force of gravity ______________.
If the distance between two objects increases, the force of gravity decreases.
Which object is NOT in our Solar System....
Halley's Comet
Pluto
The Milky Way
The Milky Way is not in our Solar System.
Why is it summer in Australia when it's winter in the United States?
The northern and southern hemispheres experience opposite seasons due to the tilt of the Earth.
During which phase of the moon does a solar eclipse occur?
A solar eclipse occurs during a new moon phase.
Moons orbit __________, and planets (and all other objects) orbit _______.
(Name the space object they orbit.)
Moons orbit planets, and planets (and all other objects) orbit the Sun.
If the mass of a objects increases, the force of gravity ______________.
If the mass of a objects increases, the force of gravity increases.
Why does Jupiter have more moons than Earth?
Because it has more mass, so it has more gravity to pull in moons.
Why do areas near the equator not have significant seasonal changes?
Areas near the equator receive nearly equal sunlight year-round.
True or False: The phases of the moon occur due to the Earth's shadow.
False. The phases of the moon occur due to the positions of the Earth, moon and Sun - which change the angle we view the moon from Earth.
The force of gravity depends on two things. What are they?
Gravity depends on the mass of the objects and the distance between them.
There is an asteroid belt between the Sun and Jupiter. The asteroids are held in place by the gravity of the Sun and the gravity of Jupiter. What would happen if Jupiter suddenly disappeared?
If Jupiter disappeared, the asteroids would be pulled in by the Suns gravity.
What shape is our galaxy?
The Milky Way is a spiral galaxy, that looks like a flat disc.
The Earth has an elliptical orbit and it's sometimes closer to the Sun during January.
Why does the USA experience winter even when Earth is closer to the Sun?
The USA experiences winter in January because it gets less direct sunlight, and it has nothing to do with Earths distance to the Sun.
A solar eclipse occurs when the ________ blocks the _________.
(name what object is blocking what other object.)
A solar eclipse occurs when the moon blocks the Sun.
All planets orbit the Sun in the same direction, but some of Jupiter's moons orbit in opposite directions. Why?
Some of Jupiter's moons orbit in opposite directions because that's the direction they were travelling when they were caught in Jupiter's orbit.
The moon is orbiting Earth. How would the motion of the moon change if the force of gravity suddenly disappeared?
If gravity suddenly disappeared, the moon would move in a straight line due to it's inertia.
Why are planets visible only at certain times of the year?
Sometimes planets in our solar system are on the opposite side of the Sun from Earth, making them not visible to us on Earth.
If the Earth has zero tilt, how would that change the seasons?
If the Earth has zero tilt, there would be no seasons.
During a lunar eclipse, the _____ is in the _______ shadow.
During a lunar eclipse, the moon is in the Earth's shadow.
The day and night cycle occurs due to the Earth's _________.
The day and night cycle occurs due to the Earth's rotation.