Blog

Which of the following best describes a typical scenario for a revolution?

The coach’s eyes usually _________ her disappointment when the team doesn’t perform well, even if she is smiling.

______________ it is common to hear people to talk about the ice age, there were in fact five major ice ages throughout Earth’s history. 

GRAMMAR: Sentence FragmentsINSTRUCTIONS: Read the sentences. Choose Complete if the sentence is complete. Choose Fragment if the sentence is incomplete.

In the Walmart ecosystem, P&G: 

The greatest advancements in science in the last decade.

Technology plays a key role in the “bottom-up” approach to political power by enabling crowdsourcing of ideas.

Why does the energy density of matter scale as a−3 and the energy density of radiation scale as a−4? (Explain the physical reason – simply quoting ω for matter and radiation is not sufficient.)

What is a standard candle? Why is it important to observe standard candles at redshifts greater than z = 0.5 to obtain a precision measurement of q0?

Name four different ways to measure cosmological distances.