From the center outward, the correct order is: solid metallic inner core, molten metal outer core, silicate mantle and crust.

solid metallic inner core, molten metal outer core, silicate mantle and crust.

Without the greenhouse effect operating in our atmosphere, what would be the impact on Earth's average temperature?

Earth would have a significantly cooler average temperature.

The principal greenhouse gases in our present atmosphere are: hydrogen sulfide and carbon disulfide., methane and ammonia., water vapor and carbon dioxide., hydrogen and helium.

water vapor and carbon dioxide.

The greenhouse effect works by trapping:

outgoing infrared radiation from the Earth.

When is the blue component of incoming sunlight scattered more than any other color?

when the Sun is high in the sky

Earth's magnetic field: prevents charged particles in the solar wind from reaching the surface.

prevents charged particles in the solar wind from reaching the surface.

What is the best description of the Earth's rotation over its entire history? Options: It has been constant over the entire history of the solar system., It has sped up at about .013 seconds per century., It undergoes abrupt changes, as the magnetic variations show., It has slowed down very gradually at about .0015 seconds per century.

It has slowed down very gradually at about .0015 seconds per century.

What is true of spring tides? Options: There would be one high and one low tide each day., The Moon's phase will be first quarter., The difference between low and high tides would be greatest., The difference between low and high tides would be smallest.

The difference between low and high tides would be greatest.

The lunar maria are found: anywhere large meteor impacts create deep basins.

almost entirely on Earth side, where the crust is thinner.

The average rate of erosion on the Moon is far less than on Earth because:

the Moon lacks wind, water and an atmosphere.

Which of the following is the correct order of the layers of Earth's atmosphere from Earth's surface up to space? Options: troposphere, stratosphere, mesosphere, thermosphere, exosphere, thermosphere, stratosphere, mesosphere, troposphere, exosphere , stratosphere, thermosphere, mesosphere, troposphere, exosphere , mesosphere, troposphere, stratosphere, thermosphere, exosphere

troposphere, stratosphere, mesosphere, thermosphere, exosphere

What can we conclude about the structure of Earth's interior knowing that the average density of Earth is higher than the average density of the rock on the continents and seafloor?

that Earth's most dense material must be beneath the surface

Astronomy- Unit 6 Review Flashcards

Student preview

50 questions

Show all answers

1.

FLASHCARD QUESTION

Front

A lunar eclipse occurs only when the moon is in the _ phase.

Back

full moon

2.

FLASHCARD QUESTION

Front

What is the Earth's tilt in degrees?

Back

23.5 degrees

3.

FLASHCARD QUESTION

Front

The phases of the moon are caused by

Back

its position relative to Earth and Sun

4.

FLASHCARD QUESTION

Front

The moon revolves around the Earth in about

Back

1 month

5.

FLASHCARD QUESTION

Front

Who was the first man on the moon?

Back

Neil Armstrong

6.

FLASHCARD QUESTION

Front

This causes the changes in the moon's surface causing craters.

Back

Meteorite impact

7.

FLASHCARD QUESTION

Front

What causes the tides?

Back

Moon's gravitational pull

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