Inquiry-based learning (also enquiry-based learning in British English)[1] is a form of active learning that starts by posing questions, problems or scenariosârather than simply presenting established facts or portraying a smooth path to knowledge. The process is often assisted by a facilitator.
A tiltmeter on Mauna Loa, used to predict eruptions by measuring very small changes in the profile of the mountain. A tiltmeter is a sensitive inclinometer designed to measure very small changes from the vertical level, either on the ground or in structures.
Earth 's orbital plane is known as the ecliptic plane, and Earth's tilt is known to astronomers as the obliquity of the ecliptic, being the angle between the ecliptic and the celestial equator on the celestial sphere. It is denoted by the Greek letter Îµ. Earth currently has an axial tilt of about 23.4Â°.