Sc.8.E.5.7.

Scientists discovered that the level of deuterium in comets forming in the Kuiper Belt is nearly identical to the level found in the oceans of Earth. This discovery provides supporting data for which theory?

• The impact of Earth’s gravity on the decay rate of deuterium is the same as the impact of microgravity.

• Most of the water that forms the oceans of Earth arrived by way of impacts with Kuiper Belt comets.

• Most comets formed from deuterium-based water that was stripped away from early Earth by solar radiation.

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

Earth’s rotation spins Earth’s liquid metal outer core around its solid metal inner core. How does this phenomenon make life on Earth possible?

• It creates the magnetosphere, which diverts high-energy particles from space away from Earth’s surface.

• It generates enough thermal energy to keep water on Earth liquid, but not so much that the water boils away.

• It attracts photons and other solar emissions that warm Earth and provide energy for ecosystems.

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NGSS.MS-ESS2-6

Venus has an extremely high surface temperature compared with Earth. This temperature on Venus mostly results from which factor?

• Venus has an orbit much closer to the Sun.

• Venus has much more extensive volcanism.

• Venus has a denser atmosphere composed mainly of carbon dioxide.

• Venus has a layer of water vapor extending much farther from the planetary surface.

Several zircon crystals from Australia have been dated to have an estimated age of 4.2 billion years. Which statement BEST describes the period of formation of these crystals?

• They formed relatively recently in the history of Earth.

• They formed at a time shortly after the formation of Earth.

• They formed at approximately the same time as atmospheric oxygen began increasing.

• They formed at approximately the same time as animals first inhabited land environments.

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NGSS.MS-ESS1-4

What causes the difference in the appearance of comets and asteroids?

• Only comets rotate and revolve as they move.

• Only comets have a high ice and dust content.

• Only comets can come near the Sun in their orbits.

• Only comets are influenced by the magnetic field of Earth.

Two planets of the same size and composition orbit a medium-sized star in a distant solar system. Based on their orbits, which is MOST likely when comparing Planet X to Planet Y?

• Planet X has weaker gravity than Planet Y.

• Planet X has shorter years than Planet Y.

• Planet X has shorter days than Planet Y.

• Planet X rotates faster than Planet Y.

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

All planets of the solar system rotate, but not all planets have the same rotational velocity. Which characteristic of a planet is determined by the rotational velocity of the planet?

• the strength of the gravity

• the shape of the orbit

• the size of the planet

• the length of the day

What does a waxing moon mean?

• when the lit part of the moon increases
• when the lit part of the moon decreases
• the pathway the earth takes around the sun
• all of the planets, moon, and other space objects going around the sun

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NGSS.MS-ESS1-1

The ___________ is a region of thousands of small bodies that exists outside the orbit of the planets. Objects in this area consist of "ices" such as ammonia, water, and methane.

• dwarf planets

• comets

• Asteroid belt

• Kuiper belt

• Oort cloud

About 99.85% of the mass of the solar system is the __________.

• Asteroid belt

• Sun

• Moon

• planets

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3