The solar corona is much cooler than the Sun's surface; hence, we must wait for a total solar eclipse to glimpse it with the naked eye
Indicate whether the statement is true or false
FALSE
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The ecliptic can be defined as
a. the plane that is perpendicular to the Earth's axis of rotation. b. the projection of the Earth's equator onto the sky. c. the path traced out by the Moon in our sky in one month against the background stars. d. the path traced out by the Sun in our sky over one year against the background stars.
The joule
a)is a unit in the British system b)can be used as a unit for either work or energy. c) is a unit of power. d) can only be used to designate mechanical kinetic energy.
What process is illustrated in this diagram?
A) the spontaneous production of a particle and its antiparticle from energy B) the deliberate production of a particle and its antiparticle by shining two flashlight beams at each other C) the creation of antimatter from matter D) quantum tunneling of two particles through an energy barrier
Discuss how astronomers know that our galaxy contains spiral arms in its disk
What will be an ideal response?