PMA 3 Review

Front

What is the distance of Earth from the sun compared to the gas giants?

Back

Earth is much closer to the sun than the gas giants are.

Front

What happens to the speed of a sound wave when it passes from a less dense medium to a denser medium?

Back

The speed will increase.

Front

What is the position of Earth, the sun, and the moon during a lunar eclipse?

Back

The order is sun, Earth, moon.

Front

Why can't sound waves be used to measure the distance to the Moon?

Back

Sound waves must move through a substance; they cannot move through a vacuum.

Front

What is the correct order of levels of organization from lowest to highest?

Back

atom, molecule, cell, tissue, organ, organ system, organism.

Front

What is a lunar eclipse?

Back

A lunar eclipse occurs when the Earth is positioned between the sun and the moon, blocking sunlight from reaching the moon.

Front

What is the difference between a solar eclipse and a lunar eclipse?

Back

A solar eclipse occurs when the moon is between the Earth and the sun, while a lunar eclipse occurs when the Earth is between the sun and the moon.

Front

What is the speed of sound in air compared to in water?

Back

Sound travels faster in water than in air.

Front

What is the role of gravity in the solar system?

Back

Gravity keeps planets in orbit around the sun and moons in orbit around planets.

Front

What is the definition of a gas giant?

Back

Gas giants are large planets that are primarily composed of hydrogen and helium, such as Jupiter and Saturn.