20-1 Question Preview (ID: 1791)

a) Large shiny thing

b) Huge mass of dust and gas undergoing nuclear fusion

c) Celestial object

d) Black hole

a) To determine shapes in the sky

b) For entertainment purposes

c) To group stars together

d) To group planets together

a) A character off of Toy Story

b) The distance it takes for light to travel in one year

c) The distance it takes for light to travel to Earth

d) Unit to describe how far away a star is from Earth

a) 8.8x10^4 m

b) 7.6x10^12 m

c) 9.5x10^15 m

d) 1.4x10^18 m

a) Gravity

b) Planetesimal influences

c) Solar flares

d) Newton's 1st Law

a) Helium is converted into hydrogen releasing energy

b) Helium is converted into iron releasing energy

c) Hydrogen is converted into helium releasing energy

d) Hydrogen is converted into iron releasing energy

a) Conduction and convection

b) Conduction and radiation

c) Radiation and conduction

d) Convection and radiation

a) Rising hot gas moves upward and cooler denser gas sinks to the center

b) Cooler denser gas moves upward and rising hot gas sinks to the center

c)

d)

a) Energy is transferred to individual atoms

b) Energy is contained in one atom

c) Energy is used

d) Energy is neither created nor destroyed

a) 1 year

b) 10 years

c) Millions of years

d) Billions of years