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The Big Bang Theory

3rd June 2020 by Jaksyn Peacock

Pre-listening vocabulary

• theory: a possible scientific explanation for something
• astronomer: a scientist who studies space
• evidence: proof that supports an idea
• observe: to notice something while performing an experiment
• matter: any substance that has mass and takes up space
• accurate: true; correct

Gapfill exercise

The Big Bang theory is a theory scientists use to the creation of the universe. The theory states that all of the matter in the universe began to expand from one single point. This idea was first proposed by astronomer Georges Lemaître in 1927. He received evidence to support his theory when another astronomer named Edwin Hubble observed that seemed to be moving away from each other. This was an indication that the universe was expanding. Because of this new information, Lemaître concluded that the universe must have once been smaller and denser. According to the theory, the universe began as something known as a singularity, which is an where matter is infinitely dense. Over 13 billion years ago, this singularity began to expand, and the matter inside it formed atoms that would later form stars and planets. Lemaître’s idea received a lot of criticism, because most scientists at the time believed that the universe had existed . However, throughout the 20th century, scientists continued to find proof that Lemaître’s theory was accurate. Today, the Big Bang theory is the most widely accepted explanation for how the universe was .

Comprehension questions

1. The idea of the Big Bang was first proposed by

Correct! Wrong!

The idea of the Big Bang was first proposed by Georges Lemaître.

2. Edwin Hubble made the observation that

Correct! Wrong!

Edwin Hubble made the observation that galaxies were moving away from each other.

3. Lemaître's idea received criticism because

Correct! Wrong!

Lemaître's idea received criticism because most scientists believed that the universe had existed forever.

Discussion/essay questions

1. While most scientists today agree that the universe was created by a Big Bang, some have other theories. Do you believe that the Big Bang theory is the correct explanation? Why or why not?

Transcript

The Big Bang theory is a theory scientists use to explain the creation of the universe. The theory states that all of the matter in the universe began to expand from one single point. This idea was first proposed by astronomer Georges Lemaître in 1927. He received evidence to support his theory when another astronomer named Edwin Hubble observed that galaxies seemed to be moving away from each other. This was an indication that the universe was expanding. Because of this new information, Lemaître concluded that the universe must have once been smaller and denser. According to the theory, the universe began as something known as a singularity, which is an area where matter is infinitely dense. Over 13 billion years ago, this singularity began to expand, and the matter inside it formed atoms that would later form stars and planets. Lemaître’s idea received a lot of criticism, because most scientists at the time believed that the universe had existed forever. However, throughout the 20th century, scientists continued to find proof that Lemaître’s theory was accurate. Today, the Big Bang theory is the most widely accepted explanation for how the universe was created.

Albert Einstein

11th March 2020 by Jaksyn Peacock

Pre-listening vocabulary

• influential: important and powerful; having influence
• fascinated: very interested in something
• introduce: to make something known for the first time
• achievement: something that is completed successfully
• target: a person that a certain group wants to attack
• physicist: a scientist that specializes in physics

Gapfill exercise

Albert Einstein was one of the most influential of the 20th century. He was born in Germany in 1879, and began attending school in 1885. As Einstein got older, he became fascinated with the nature of . He published his first scientific paper at the age of 16, and later went on to study at a university in Switzerland. In 1905, Einstein published four scientific papers. The papers introduced his theory of special relativity, which allowed scientists to better understand the between time and space. Einstein won the Nobel Prize in 1921 for his achievements. In the 1930s, however, Einstein became a target of the Nazi Party of Germany. He moved to the U.S. to protect himself, and continued to work as a physicist. Einstein died in 1955, but his brain is kept in the Princeton University Medical Center, and it is still by scientists today.

Comprehension questions

1. Albert Einstein was born in

Correct! Wrong!

Albert Einstein was born in Germany.

2. At university, Einstein studied

Correct! Wrong!

At university, Einstein studied physics.

3. Einstein moved to the U.S. because

Correct! Wrong!

Einstein moved to the U.S. because he had to protect himself from the Nazis.

Discussion/essay questions

1. Some people wanted to use Einstein’s discoveries to develop weapons, such as the atomic bomb. What is your opinion on the use of new scientific discoveries to build stronger weapons?

Transcript

Albert Einstein was one of the most influential scientists of the 20th century. He was born in Germany in 1879, and he began attending school in 1885. As Einstein got older, he became fascinated with the nature of light. He wrote his first scientific paper at the age of 16, and later went on to study physics at a university in Switzerland. In 1905, Einstein published four scientific papers. The papers introduced his theory of special relativity, which allowed scientists to better understand the connection between time and space. Einstein won the Nobel Prize in 1921 for his achievements. In the 1930s, however, Einstein became a target of the Nazi Party of Germany. He moved to the U.S. to protect himself, and continued to work as a physicist. Einstein died in 1955, but his brain is still kept in the Princeton University Medical Center. Scientists still study it today.