Physical Science Fall Semester Exam

Where are stars created or "born"?

• Main sequence
• Nebula
• Dwarf galaxy
• black holes

Which color of stars are the hottest?

• red
• blue
• white
• yellow

A black hole is an object so dense and with so much gravity that even ___ cannot escape

• man
• spaceships
• light
• aliens

What is the name of the explosion at the death of a supergiant?

• neutron star
• nebula
• supernova
• black hole

What type of nuclear reaction occurs in the core of the sun?

• fusion
• fission
• radio waves
• explosion

Where do most stars spend most of their life?

• nebula
• protostar
• main sequence
• red giant

Which color has the longest wavelength?

• Green
• Red
• Yellow
• Blue

Which waves on the electromagnetic spectrum have the longest wavelengths?

• radio
• infared
• ultraviolet
• gamma

Which of the following is NOT evidence that the big bang occurred?

• Galaxies have a red shift which show they are moving away from us
• Hubble Space Telescope has taken pictures of galaxies 13 billion light years away
• The universe is contracting as shown by the blue shift of galaxies
• Cosmic background microwave radiation shows that the universe is not at absolute zero, but instead a few Kelvins higher

What is happening to the laser at point B?

• transmission
• reflect
• refraction
• absorption