science study

what are two sources of earths internal heat energy?

• heat of formation and radioactive decay

• sunlight and moon light

• Gravity and Background Radiation

• radiation and solar energy

what caused the earth to become very hot during its formation?

• Radioactive decay under the surface

• the heat from the sun

• the constant bombardment of meteorites

• heat from mard blew toward our planet

Tags

NGSS.HS-ESS1-6

what process occurs when an unstable molecule gives off heat (and transforms into a stable molecule)

• heat of formation

• Radioactive Decay

• Big bang Theory

• Cosmic background radiation

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

the earths internal temperature is currently in "equilibrium," which means that it is creating as much heat as it is losing. What process is creating new heat inside the earth?

• heat formation is still happening

• Radioactive decay is releasing heat within the earth

• earth is still belong bombarded by meteorites

• the sun is the source of heat inside our earth

Tags

NGSS.HS-ESS2-3

what does chemical composition refer to?

• how Earth's layers interact with each other

• chemical reactions that take place in earths layers

• the kinds of atoms and molecules earth's layers are made of

• the Physical properties of Earth's layers.

Tags

NGSS.MS-PS1-1

which of earths layers are separated based on chemical composition?

• crust, inner core, outer core , mantle,

• lithosphere, asthenosphere, mesosphere

• crust, mantle, core

• lithosphere, asthenosphere, mesosphere,inner core, outer core

earthquake waves can be used to determine the different densities of earth's layers. how does this work?

• the earthquake waves are blocked, showing the layers are solids.

• the earthquakes waves are shortened, showing the layers are made of the same material

• the earthquake waves are lengthened , showing that the mantle is made of water and salt

• the earthquake waves are traveling at different speeds, showing the layers have different compositions.

Tags

NGSS.MS-PS4-2

meteorites are often used to infer the structure of internal earth. Why?

• all materials from space are made of only iron

• traveling through the atmosphere alters the meteorites

• meteorites and the earth were both formed from the same nebula

• meteorites were once part of earth.

Tags

NGSS.HS-ESS1-6

what does the term "physical properties" refer to?

• how earth's layers interact with each other

• chemical reactions that take place in earths layers

• the kinds of atoms and molecules earth's layers are made of

• the chemical composition of earths layers

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

the lithosphere floats on top of the asthenosphere. how are these two layers separated

• the layers have different chemical composition

• the layers have different physical properties

• the lithosphere has a higher density than the asthenosphere

• the asthenosphere is made of different materials than the lithosphere