Unit Test: Astronomy

Front

What is the approximate age of the Universe according to the standard model of Big Bang cosmology?

Back

13.8 billion years old.

Front

What is the relationship between the orbital period and average distance of orbiting objects?

Back

The longer the orbital period of an object around its star, the longer the average distance of the object from its star.

Front

What Moon phase occurs during a lunar eclipse?

Back

Full Moon.

Front

What is a Black Hole?

Back

A region in space that exerts such a strong gravitational pull that no light escapes.

Front

What primarily causes high and low tides on Earth?

Back

The Moon's gravitational pull.

Front

Define the Big Bang Theory.

Back

The leading explanation about how the universe began, stating it started from a singular point and has been expanding ever since.

Front

What is the role of gravity in the formation of stars?

Back

Gravity pulls together gas and dust in space to form stars.

Front

What is a solar eclipse?

Back

An event that occurs when the Moon passes between the Earth and the Sun, blocking the Sun's light.

Front

What is the difference between a planet and a star?

Back

A planet orbits a star and does not produce its own light, while a star generates light and heat through nuclear fusion.

Front

What is the significance of the Hubble Space Telescope?

Back

It has provided deep space images and helped in understanding the universe's expansion.