Earth
The outer layer of the Earth's crust is called this.
What is the crust?
This is the name of Earth's natural satellite.
What is the moon?
This is the cause of the seasons on Earth.
What is the tilt of Earth's axis?
This is the name for the daily changes in ocean water levels.
What are tides?
This happens when the Moon passes between the Earth and the Sun.
What is a solar eclipse?
This keeps the denser materials in the center of the Earth.
What is gravity?
This is what happens when the Earth is between the Moon and the Sun.
What is a lunar eclipse?
This is when summer occurs in the Northern Hemisphere.
What is when the North Pole is tilted toward the Sun?
This is the cause of high tides.
What is the Moon's gravitational pull on the Earth?
This occurs when the Moon's shadow completely blocks the Sun.
What is a total solar eclipse?
The Earth's mantle is mostly made of this.
What is solid rock?
This is how old the surface of the moon is.
What is approximately 4.5 billion years?
This is what the longest day of the year in the Northern Hemisphere is called.
What is the summer solstice?
This is the number of high tides that occur in most places each day.
What is two?
This is how often a solar eclipse occurs.
What is rarely?
This is what the core of the Earth is mostly made of.
What is iron?
This is how the moon probably formed (according to scientists).
What is a big collision with a Mars-sized asteroid?
This is the name for when day and night are nearly equal.
What is an equinox?
This is the name for what happens during a new or full moon when the Sun and the Moon align.
What are Spring Tides?
This is how long a lunar eclipse can last.
What is hours? (Up to 5 hours)
These caused the Earth to heat up during its formation.
What are collisions of different materials?
This is what moon rocks tell us about Earth.
What are Earth's early days?
This is the position of the Sun during the winter solstice in the Northern Hemisphere.
What is directly over the Tropic of Capricorn?
These occur when the Moon and the Sun are at right angles to each other.
What are neap tides?
This is the name for the inner, cone-shaped part of Earth's shadow where all light is blocked.
What is the umbra?