Astronomy / Chemistry Quest

Which of the following best describes a polar molecule?

• A molecule with two negative ends

• A molecule with one positive end and one negative end

• A molecule that is completely positive

• Carbon dioxide is an example of a polar molecule

Which element created in the Big Bang makes up more than 90% of our Sun’s mass?

• Iron

• Helium

• Hydrogen

• Cobalt

Tags

NGSS.HS-ESS1-2

How would you expect the universe to change in regards to temperature and density from early on in its “life” to present day?

• Early universe was much colder and not dense at all

• Early universe was much hotter and much more dense

• Present day universe is much hotter and not dense at all

• Present day universe is colder but extremely dense

Tags

NGSS.HS-ESS1-2

What process is responsible for the production of a star’s energy?

• Rotation of the gases

• Inflation of the gases

• Nuclear Fusion of hydrogen into helium

• Gravity pulling on the gases

Tags

NGSS.HS-ESS1-1

A four year old asks you what will our Sun turn into when it’s “dead.” You would tell that four year old, “Our Sun will end it’s life cycle as a …..

• Red Supergiant

• Neutron Star

• White dwarf

• Black hole

The number of protons an element has is equal to its

• Atomic mass

• Atomic number

• Number of neutrons it has

• Whether its a metal or nonmetal

The phrase “opposites attract” describes which of the four forces?

• Gravity

• Strong nuclear

• Electromagnetic

• Weak

Tags

NGSS.HS-PS3-5

What type of star has a temperature of 25,000 K and low luminosity?

• Supergiant

• Giant

• Main sequence

• White dwarf

When was the element 92, Uranium, created?

• big bang

• star's life

• supernova

• by humans in a lab

Tags

NGSS.HS-ESS1-3

When did hydrogen, the 1st element, get created?

• supernova

• big bang

• star's life

• by humans in a lab

Tags

NGSS.HS-ESS1-2