4.02 exploring_universe_video_worksheet_Samantha Castro
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Astronomy
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Dec 6, 2023
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Exploring the Universe Video Worksheet
Introduction
There have been hundreds of missions to space, both manned and unmanned. These missions have provided valuable insights into the universe and our place in it. In addition, advances in technology and communication for space travel have changed how we live and communicate globally. For this activity, you will view two videos about space exploration and technology: The Exploration of Mars
and Radio Telescopes
. Answer the reflection questions for each video. Procedures:
1.
Watch the videos: The Exploration of Mars
and Radio Telescopes.
2.
Answer the reflection questions for each video.
3.
Some reflection questions ask you to research using internet resources. Be sure to cite the source of your research.
4.
Use your own words when responding to the reflection questions. Reflection Questions- Video 1
1.
Compare the Viking 1 and 2 probes to the Pathfinder probe that landed on Mars in 1997.
How was their technology different?
The pathfinder probe was designed to evaluate the Mars’s geology and climate. It carried
scientific instruments, including cameras and a meteorology station. The Viking probes had older and less sophisticated technology. They also used magnetic tape to store data,
while the Pathfinder probe used a solid-state memory.
2.
Mariner 4 and 9 and Viking 1 and 2 probes needed enhanced cameras and wireless communication equipment to take images of Mars's surface and send them back to Earth. According to the video, how did improving our technology lead to new discoveries about Mars?
Our technology improved drastically because back in 1965 when the Mariner 4 probe sent back images, they were in black and white and although we understood it we needed something better. Finally over the years they sent the Pathfinder and that helped us get large amounts of data on Mars. It helped us get much more information about Mars. We were able to learn about the climate variations.
3.
Using internet resources, describe how advances in imaging and wireless communication for space exploration have led to changes in imaging devices and communication on Earth.
The advances in imaging and wireless communication for space exploration have led us to have a GPS monitoring, that helps to be able to determine a person’s location or of an item. It also has revolutionized the world with internet and has been able to make our communication fast and easy.
4.
Mars Odyssey and Mars Express required spectrometric equipment that could analyze Mars's atmosphere and surface composition and temperatures. Using internet resources, describe some home or business technologies that use spectrometric equipment to analyze atmosphere or temperature. Some home or business technologies that use spectrometric equipment would be, fire alarms because they’re triggered when the temperature of the atmosphere changes. Airconditioning is another one because it is also triggered when the temperature of the atmosphere changes.
5.
Using internet resources, research one space probe described in the video. Describe its goals and justify its purpose by explaining how it helped advance our understanding of the universe.
The probe I researched was the Pathfinder. According to the Space Center of Houston TX, the Pathfinder mission helped lead to various scientific discoveries about Mars. It helped suggest that the Martian atmosphere has a yellowish-ground color due to the mixing of fine dust in the lower atmosphere. They also helped discover that Mars’s atmosphere is heated by the surface.
Reflection Questions- Video 2
1.
What are radio waves?
Radio waves are invisible rays that can only be detected by a radio telescope. They are also the longest wave with the least amount of energy. 2.
Describe how radio telescopes function. A radio telescope functions like how a TV antenna works. The radio waves in space are detected by a huge parabolic reflector, this concentrates them toward an antenna located
at the top. The radio receptor then converts these radio waves into electrical signals which are then increased and transmitted to the center of the parabola. These are then recorded and analyzed in a lab so that way scientists can have a radio image of whatever source is observed. 3.
What are the advantages of using a radio telescope instead of a reflecting or refracting telescope? The advantages of using a radio telescope are because they are not obstructed by clouds and dust. They can be used during day and night, whereas reflecting and refracting telescopes are used at night. Radio telescopes are also good because they can observe much more distant objects. 4.
Using internet resources, describe the ways radio waves are used on Earth.
We uses radio waves all the time on Earth. We use radio waves when we watch television. We also use radio waves when we’re driving in the car and listening to the radio. 5.
How do radio telescopes help advance our knowledge of our universe?
Radio telescopes are able to sense the signals in space and help us see things that we have never seen before. This helps us better our understanding of our universe.
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