The Solar System

Question 1

The study of the sun is...

Accepted Answer

heliophysics.

Question 2

A luminous celestial body around which planets revolve, composed mainly of hydrogen & helium...

Accepted Answer

is a sun.

Question 3

Period of greatest solar activity in the 11 year cycle of the Sun when many sunspots appear...

Accepted Answer

is the solar maximum.

Question 4

The force of attraction between objects due to their masses is...

Accepted Answer

gravity.

Question 5

Period of least solar activity in the 11 year solar cycle, when sunspots & solar flares drop...

Accepted Answer

solar minimum

Question 6

2 bodies attract each other with a force related to their masses & the distance between them.

Accepted Answer

Law of Universal Gravity

Question 7

The movement of matter due to differences in density caused by temperature variations is...

Accepted Answer

convection.

Question 8

A dark area of the photosphere, cooler than surrounding areas with a strong magnetic field is..

Accepted Answer

a sunspot.

Question 9

The description of the cosmos where Earth is at the orbital center of all celestial bodies...

Accepted Answer

is the geocentric model.

Question 10

Explosive release of energy from the sun, associated with magentic disturbances on its surface

Accepted Answer

is a solar flare.

Question 11

An eruption of a flamelike bridge of cool, high-density gas from the solar chromosphere...

Accepted Answer

is a solar prominence.

Question 12

The motion of a body as it travels around another body in space...

Accepted Answer

revolution

Question 13

The model with the Earth and planets revolving around the Sun

Accepted Answer

is the heliocentric model.

Question 14

The force with which an object is pulled toward a celestial body due gravitation & its mass...

Accepted Answer

is weight.

Question 15

The spin of a body on its axis is...

Accepted Answer

rotation.

Question 16

A measure of the amount of material a body contains is its...

Accepted Answer

mass.

Questions 16