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spare drill bits are used to abrade rocks an can be swapped out by the arm moving ino a compartment if one gets stuck in a rock

spare drill bits are located in one of two drill compartments

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REMS stand for Rover Enviromental Monitoring Station. It is a weather station that measures atmospheric pressure, temperature, humidity, winds, plus ultraviolet radiation levels.
By: Emma FO

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Like Mars Pathfinder, the Mars Exploration Rovers are solar-powered. Energy is absorbed through solar arrays on panels that sit atop what look like the rover's "wings." They were designed to maximize the area of solar cells that collect the sun's energy.

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The main job of the chimra is to analyze chemical elements in martian rock and "soil" (regolith) the Chimra is located on the turret at the end of the robotic arm.
Evan

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What are the wheels made of to help the Rover drive?-The wheels are made out of aluminum. They have bent titanium springs for springiness and support. They also have cleats on them to help with traction.

Where is this instrument located on the Rover? On the Rover's arm, body, or under the rover. - The wheels are located under the rover.
Grace Asmar

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What is the rover's main job and how does it help mission planners?
Its main job is to take pictures and videos (during spacecraft descent) through Martian atmosphere. This helped mission planners decide the best route for "Curiosity" to travel through.
Where is the instrument located on the rover?
The camera is located on the "fore-port" side of the rover, facing down

-Sierra L

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The main job of this tool is to remove dust from rock samples.
It is located on the rover's arm.
-Anna S.

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The main purpose of the high - gain antenna, is to receive and or transmit data that it collects. It's location is at the mid aft port side of the curiosity's deck, witch is at the back of the rover.

-Maggie

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ChemCam is used to identify the chemical and mineral composition of rocks and soils. It consists of a telescope, a lazer, a remote micro-imager, and a spectrometer. It is located on the top of the rover but the spectrometer is on the rover's body.
catherine graves

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the main purpose is they capture 3D images so the rover cant  get lost or crash into an object. the camera is on the bottom near the end of the rover.
sam

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The main job is to take wide view pictures of the surface, atmospheric features, and the terrain. The Mastcam is located on the body. (placed at human-eye height)

Kayla

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The main purpose is to generate power from the heat. The RTG gives power to the rover for 687 Earth days. It uses the radioactive element Plutonium creates electricity and heat. The RTG is located on the back of the rover it is the big thing that sticks off the back and points upward.

Liam

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The main purpose of the suspension is to let the rover traverse over rougher terrain without flipping over.  It does this using a "rocker-bogie" suspension system, in which when one side of the rover goes up, the other will go down to keep it from flipping.  This instrument is located on the sides of the rover.

By- Greyson

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MAHLI is a magnifying lens that takes close-up images so that scientists can see the minerals and textures in rock surfaces. The MAHLI is located on the turret at the end of the robotic arm.

By Hayley S.

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The main job of this instrument is to take samples of the land and take pictures, located in the front(?) of the rover

By: Dominic M

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Its main job is to primarily receive data from Earth.
And it is located at the top of the body.
Katie H.

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The main job of APXS is to sample martian rock and "soil" for chemical elements. The APXS is located on the rovers arm. Specifically on the end of the arm.

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A main job of this instrument is to have cameras in driving and obstacle avoidance. This instrument is located at the front of the rover.

By: Ellie B.

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SAM = Sample Analysis at Mars instrument 

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SAM = Sample Analysis at Mars instrument 

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A main job of this instrument is to examine gases from the atmosphere and from rock/soil samples to see if there is any carbon-containing "building blocks of life". This instrument is located on the body of the rover.

By: Miss LaPane