The phanerozoic eon is made up of all of the following except the era.

a. mesozoic
b. cenozoic
c. permezoic
d. paleozoic

dinosaurs became extinct due to the

a. breakup of pangaea.
b. pleistocene ice age.
c. cretaceous extinction event.
d. permian extinction event.

which of the following represents units of geologic time in increasing order?

a. epoch, period, eon, era
b. era, eon, period, epoch
c. epoch, period, era, eon
d. eon, era, period, epoch

. which of the following statements about earthquakes is false?

a. the building and release of stress along a plate boundary can result in an earthquake.
b. earthquakes can occur far from plate boundaries.
c. seismic waves originate at a point called the focus.
d. no amount of force can cause rock to deform.

basalt, formed from magma, contains iron-rich minerals. why is this important?

a. iron is magnetic and it triggers the reversal of earth's magnetic field.
b. iron is one of most abundant elements and can be found on every continent.
c. iron is rich in nutrients and makes the soil easily identifiable.
d. iron is magnetic and records the orientation and direction of earth's magnetic field

the network of satellites monitoring continental movement is referred to as

a. cpb.
b. tps.
c. cmm.
d. gps.

which of the following is not a force causing plate motion?

a. basal drag
b. gravity
c. ridge push
d. slab pull
the most abundant type of rocks on earth are classified as

a. slate.
b. igneous.
c. sedimentary.
d. metamorphic.

which of the following is a correct principle of relative-age dating?

a. rock-forming materials are deposited in horizontal layers, though they may be tilted later.
b. sediments are deposited in lateral sheets, but their orders often change.
c. if one rock contains pieces of another, the rock containing the pieces is older than the pieces.
d. in undisturbed rock layers, the youngest rocks are on the bottom.

which of the following lists minerals in order of hardness from lowest to highest on the mohs hardness scale?

a. calcite, quartz, wire nail, topaz, diamond
b. talc, fluorite, fingernail, streak plate, diamond
c. fingernail, penny, glass, topaz, diamond
d. gypsum, apatite, topaz, feldspar, corundum
which of the following statements about seafloor spreading is false?

a. continents move as the seafloor spreads along a mid-ocean ridge.
b. close to the mid-ocean ridge, there is almost no sediment.
c. magma rises through the crust along the mid-ocean ridge.
d. the oldest crust is closest to the mid-ocean ridge.

The Phanerozoic, the period of obvious life, is subdivided into three main spreads of time mainly on the evidence of individual collections of life-forms: the Paleozoic (541 million to 252 million times before), Mesozoic (252 million to 66 million ages gone), and Cenozoic (66 million cycles past to the present) epochs.

The Cretaceous-Tertiary destruction contest, now described the Cretaceous–Palaeogene quenching event, was regarding 66 million times before. It may be described the K/T extinction phase or K/Pg event for precise. This is the important event which exterminated the dinosaurs at the edge of the Cretaceous era.

The geologic time scale is a method of historical dating that compares geological layers to time. It is practiced by geologists, paleontologists, and other Earth experts to define the timing and proportions of accidents that have transpired during Earth's antiquity.

All other statement are correct about the earth quakes except this because only on few occasions can a rock be deformed by force and also it happens some times that some earthquake can occur inside a plat tectonics.

The Earth's magnetic field assists to diverge largest of the solar wind, whose loaded scraps would differently tear away the ozone cover that shields the Earth from the dangerous ultraviolet transmission. Because of the proximity of such oxide minerals, basalt can take powerful magnetic impressions as it cools, and paleomagnetic investigations have made great value of basalt.

A GPS shipping system is a GPS transceiver and audio/video (AV) ingredients planned for a particular determination such as a car-based or hand-held equipment or a smartphone app. The global positioning system (GPS) is a 24-satellite shipping system that works multiple satellite signs to find a receiver's situation on earth.

As per plate tectonics system, there are three bands that produce plate motion: basal drag, ridge push, and slab pull.Basal drag is created by convection flows in the mantle.Ridge push is the title for the energy due to the evidence that the mid-ocean ridges are larger (more elevated) than the seafloor,slab pull leads to the case then when a slab drops it pulls on the balance of the plate.

About 75% of the Earth's surface is covered with sedimentary rocks, making them most abundant. Sedimentary rocks are the most popular rocks displayed on the Earth's exterior but are only a minor component of the whole crust, which is managed by igneous and metamorphic rock.

According to the principle of absolute horizontality, maximum rock-forming elements are placed in parallel layers. Seldom Rick sheets are damaged or displaced after they form. For example, the layers force be tilted or gathered. Even though they sway be tilted, all the layers were basically installed horizontally.

 The Mohs' hardness scale was formed in 1822 by Frederich Mohs. This scale is a graph of relative hardness of the different metals  -. Since hardness depends against the crystallographic management (ultimately on the strength of the bonds between atoms in a crystal.

Seafloor spreading is a method that happens at mid-ocean elevations, where the new marine crust is created throughout volcanic action and then slowly pushes away from the moraine.

a. european colonies