Question 4 1 pts
Volcanic eruptions are the result of the movement of tectonic plates. Which of the
following most affects the movement of these tectonic plates?
The movement of ocean currents
O Heat within Earth
The gravity of the Moon
Radiation from the Sun
Question 5
1 pts

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.