Two pairs of sunspots appear similar, but if one photo was made in 1990, and the next photo was in 2002, we would note what difference?
What will be an ideal response?
In the 12 years, the magnetic field polarities will have reversed.
You might also like to view...
Jupiter's magnetic field is ________ Earth's magnetic field.
A) about 20,000 times as strong as B) about the same strength as C) about twice as strong as D) much weaker than
Uncharged particles in an atom are called ________.
A. neutrinos B. protons C. positrons D. electrons E. neutrons
A student is sitting on the right side of a school bus when it makes a right turn. We know that the force of gravity acts downwards and a normal force from the seat acts upwards. If the student stays in place when the bus turns, we also know that there must be
A. no other force on the student. B. a force parallel to the seat directed forward on the student. C. a force parallel to the seat directed to the left on the student. D. a force parallel to the seat directed to the right on the student. E. a force parallel to the seat in a direction between forward and left on the student.
Terrestrial planets grew slowly and the Jovian planets grew quickly
a. True b. False Indicate whether the statement is true or false