Answer:
Traffic from all four directions must stop.
Explanation:
- The four-way stop sign is also called as all stop sign in traffic management consists of stopping of all the vehicles for all the four directions at the same time of the intersection before crossing it .And was designed to have a low traffic volume and is commonly found in America, Africa and Canada.
True
Though initially designed for refueling, NASA plans to expand the capabilities of Restore-L to include other maintenance activities that will extend the life of an orbiting spacecraft. “Restore-L effectively breaks the paradigm of one-and-done spacecraft,” says Satellite Servicing Capabilities Office (SSCO) Associate Director Frank Cepollina in a prepared statement. Once deployed, the robot could act as a gas station in space, providing satellites with much-needed propellant. On the maintenance side, the robot one day may be able to manufacture and assemble components in space and use them to service a satellite. It also may be used to reduce space accidents by removing space junk from orbit.
The geographic use of technology to view and record observations from a distance is known as remote sensing.
It replaces slower, steeply-priced statistics series at the ground, presenting rapid and repetitive coverage of extraordinarily huge areas for everyday programs, ranging from weather forecasts to reviews on herbal failures or climate change.
Remote sensing is the manner of detecting and tracking the physical characteristics of a place by using measuring its meditated and emitted radiation at a distance (commonly from a satellite or plane). special cameras gather remotely sensed photographs, which help researchers "experience" matters approximately the Earth.
Examples of passive far-flung sensors consist of film pictures, infrared, charge-coupled gadgets, and radiometers. active series, on the other hand, emits energy in order to experiment with objects and areas whereupon a sensor then detects and measures the radiation that is meditated or backscattered from the goal.
Learn more about remote sensing here:brainly.com/question/17482555
#SPJ4
4, The grain size would be sand, and the rock name would be sand stone.
Answer:
Seafloor spreading results from intense activity in the upper mantle which cracks the crust and pushes it away.
Explanation:
Seafloor spreading is a process that was first noticed by Alfred Wegener and was used by him in his theory of plate tectonics. There are three types of plate boundaries; convergent boundary, transform boundary, and divergent boundary. The last one is the one where seafloor spreading occurs.
The convection currents in the mantle are the process that breaks up the crust and move the tectonic plates, and when there is higher activity than usual at some place it results in break up the crust of an already existing tectonic plate. Basically, magma rises at a higher rate and pushes through the crust, in this case, the oceanic crust, and it manages to gradually break through it and come out on the seafloor. By doing so, the magma and the pressure from below are pushing the two now divided parts of the plate. As the space between the two different parts becomes larger and large the density of the crust becomes smaller and smaller so more and more magma rises through. The magma quickly solidifies on the ocean floor and piles up, thus creating an underwater mountain range known as a mid-ocean ridge.
