Science Flashcard

Front

What role did gravity play in the formation of the planets?

Back

Gravitational forces brought together several moon-sized bodies, called planetesimals, to form larger bodies that became planets.

Front

Which of the following best describes the big bang theory?

Back

The Universe was formed as a result of a massive explosion sending out material in all directions at a great speed.

Front

Which physical process is most frequently responsible for changes in oceanic tides? Options: volcanic eruption, deposition, gravity, erosion

Back

gravity

Front

The regular rising and falling of ocean water due to the gravitational pull of the Sun and Moon is called

Back

the tide.

Front

Planets in the Solar System revolve around the Sun because

Back

the Sun is the most massive object in the Solar System.

Front

In stars, hydrogen nuclei combine with each other to form helium and other heavier elements. What is this process called?

Back

fusion

Front

Why does the Moon have a greater influence on Earth's tides than the Sun does? Options: because the Moon is more massive than the Sun, because the Moon is less massive than the Sun, because the Moon is farther away from Earth than the Sun is, because the Moon is closer to Earth than the Sun is

Back

because the Moon is closer to Earth than the Sun is

Front

The tides of the ocean result from the gravitational pull on the Earth by the Sun and _______.

Back

the Moon

Front

Which theory describes the formation of the Universe as a gigantic explosion from a single point that threw out all of the material in the Universe in all directions? Options: big bang theory, theory of evolution, heliocentric theory, geocentric theory

Back

big bang theory

Front

What is the term describing a large grouping of stars in space?

Back

a galaxy