Making Connections in A Black Hole is NOT A Hole

The first person to map the Milky Way Galaxy using radio waves was

• Sir Isaac Newton.

• Albert Einstein.

• Karl Jansky.

• Grote Reber.

How did Karl Jansky contribute to the knowledge of black holes?

• He developed a theory of black hole creation.

• He invented a telescope to detect radio energy.

• He discovered radio waves coming from space.

• He located the first supermassive black hole.

Science writers make connections between ideas or subjects to

• show relationships.

• entertain the reader.

• perform experiments.

• prove an argument.

The discovery of supermassive black holes began with the discovery of

• the Big Dipper.

• tiny black holes.

• the Milky Way.

• radio energy from space.

Why were astronomers interested in studying radio waves in the 1980s and 1990s?

• The radio waves were coming from the center of the Milky Way.

• The radio waves were visible and could be seen in the sky above Earth.

• The radio waves were coming from the sun and heading to Earth.

• The radio waves were causing static on the transatlantic telephone service.

In the 1930s, Grote Reber became known for

• solving a problem with transatlantic telephone service.

• inventing a telescope that could detect radio signals.

• discovering the location of the first known black hole.

• discovering a constellation of stars in outer space.

The discovery of supermassive black holes began with the discovery of

• the Big Dipper.

• the Milky Way.

• radio energy from space.

• tiny black holes.

According to A Black Hole Is NOT a Hole by Carolyn Cinami DeCristofano, astronomers think a supermassive black hole is created when

• gravity causes many, many stars to collide.

• radio waves travel through space to Earth.

• there is too much empty space in a galaxy.

• a single star or planet explodes and collapses.

Read this excerpt from "Why Are They Called Black Holes?"

After many millions or billions of years, the star runs out of hydrogen and energy. Then the star "dies" and collapses into a dense little ball with tons of gravity. Albert Einstein’s theory of relativity predicted that black holes would have to exist if a dead star had enough gravity. Using Einstein's theory, astronomers calculated that if a star more than three times as heavy as our sun died, the force of gravity pulling matter in could overwhelm any other force pushing matter out.

In this excerpt, the author makes a connection between a scientific theory and

• the beginning of a star's existence.

• the calculations that scientists make.

• the idea that all things live and die.

• the question of why gravity exists.

Before watching a video about black holes, it is important to

• write an essay that connects the video to a text about black holes.

• think about how the video’s director captured images of black holes.

• consider how details about black holes relate to the video’s purpose.

• predict what scientists might discover about black holes in the future.