Newly discovered ‘super-Earth’ orbits its star once every 2.4 days

Newly discovered ‘super-Earth’ orbits its star once every 2.4 days

Assessment

Interactive Video

Science, Physics

11th Grade - University

Hard

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The video discusses the discovery of the exoplanet GJ740B, located 36 light years from Earth. It details the planet's characteristics, such as its temperature, mass, and orbit. The video also mentions a potential second planet in the same system. Two methods for discovering exoplanets, the transit method and the radial velocity method, are explained.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the estimated temperature of the planet GJ740B?

200 degrees Celsius

300 degrees Celsius

556 degrees Celsius

1000 degrees Celsius

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How long does it take for GJ740B to orbit its star?

2.4 days

30 days

10 days

1 year

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the mass of the potential second planet compared to Saturn?

Half of Saturn

Three times Saturn

Twice as much as Saturn

Similar to Saturn

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method involves observing changes in light due to a planet passing in front of a star?

Transit method

Radial velocity method

Gravitational lensing

Direct imaging

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the radial velocity method examine to discover new planets?

Size of the planet

Brightness of the star

Distance from Earth

Change in color of light around a star