1.
Place a checkmark on all of the natural satellites.
Correct Answer(s)
A. Moon
D. Earth
E. Jupiter
Explanation
The natural satellites are celestial bodies that orbit around a planet. In this question, the correct answer choices are "moon," "Earth," and "Jupiter." The moon is Earth's natural satellite, while Earth itself is a natural satellite of the Sun. Jupiter, on the other hand, has numerous natural satellites, known as its moons. Therefore, these three choices are all examples of natural satellites.
2.
The longest wavelength in the electromagnetic spectrum is ___ waves.
Correct Answer
C. Radio
Explanation
The longest wavelength in the electromagnetic spectrum is radio waves. Radio waves have the longest wavelength among the given options.
3.
Only xrays and gamma rays are shorter than ____ waves
Correct Answer
A. Ultraviolet
Explanation
Ultraviolet waves have a shorter wavelength than microwaves, infrared, and visible light waves. X-rays and gamma rays are the only waves that have even shorter wavelengths than ultraviolet waves.
4.
______ was launched in 1997 to study Saturn.
Correct Answer
B. Cassini
Explanation
Cassini was launched in 1997 to study Saturn.
5.
A goal of ___ was to have two spacecraft join together while in orbit.
Correct Answer
D. Project Gemini
Explanation
Project Gemini was a NASA program that aimed to develop the necessary technology and techniques for space travel, including the ability to rendezvous and dock two spacecraft while in orbit. This was a crucial goal of the project as it laid the foundation for future missions, such as the Apollo program, which required spacecraft to dock with the lunar module in order to land on the moon. By successfully achieving this objective, Project Gemini paved the way for more complex and ambitious space missions.
6.
___ was the final stage of the space program to reach the Moon.
Correct Answer
C. Project Apollo
Explanation
Project Apollo was the final stage of the space program to reach the Moon. This project was initiated by NASA in the 1960s with the goal of landing humans on the Moon. It included a series of missions, with Apollo 11 being the most famous, where astronauts Neil Armstrong and Buzz Aldrin became the first humans to set foot on the lunar surface. Project Apollo marked a significant milestone in space exploration and is considered a major achievement in human history.
7.
As part of ____, John Glenn became the first American to orbit Earth.
Correct Answer
A. Project Mercury
Explanation
John Glenn became the first American to orbit Earth as part of Project Mercury. Project Mercury was the first human spaceflight program of the United States, and its goal was to put a human in orbit around the Earth. John Glenn's historic flight took place on February 20, 1962, when he orbited the Earth three times aboard the Friendship 7 spacecraft. This achievement was a major milestone in the early days of space exploration and paved the way for future space missions.
8.
____ telescopes are useful under most weather conditions and at all times of night and day.
Correct Answer
C. Radio
Explanation
Radio telescopes are useful under most weather conditions and at all times of night and day because they detect and study radio waves emitted by celestial objects. Unlike optical telescopes, which rely on visible light, radio telescopes can penetrate through clouds, dust, and other atmospheric disturbances, allowing for observations even in unfavorable weather conditions. Additionally, radio waves are constantly being emitted by celestial objects, making radio telescopes operational at all times, day or night.
9.
____ telescopes allow us to study the visible light radiated by the stars.
Correct Answer
D. Optical
Explanation
Optical telescopes allow us to study the visible light radiated by the stars. These telescopes use lenses or mirrors to gather and focus the light, enabling astronomers to observe and analyze the visible light emitted by celestial objects. Reflecting telescopes use mirrors to gather and focus light, while refracting telescopes use lenses. Radio telescopes, on the other hand, detect radio waves emitted by celestial objects, and are not used to study visible light.
10.
A ___ telescope uses concave mirrors to focus light.
Correct Answer
A. Reflecting
Explanation
A reflecting telescope uses concave mirrors to focus light. In this type of telescope, the primary mirror at the bottom of the telescope collects and reflects incoming light to a secondary mirror, which then reflects the light to the eyepiece or camera. The concave mirrors in a reflecting telescope help to gather and focus the light, allowing for clear and detailed observations of celestial objects.
11.
In a ___ telescope, light passes through convex lenses.
Correct Answer
B. Refracting
Explanation
In a refracting telescope, light passes through convex lenses.
12.
Space stations are
Correct Answer
B. Satellites
Explanation
Space stations are classified as satellites because they are man-made structures that orbit around the Earth. They are designed to serve as a long-term habitat for astronauts and conduct various scientific experiments and research in space. Unlike space probes, which are unmanned spacecraft sent to explore celestial bodies, space stations are inhabited by astronauts who live and work on board for extended periods of time. Therefore, the correct answer is satellites.
13.
The Voyagers are ___ that havetraveled beyond our solar system.
Correct Answer
A. Space probes
Explanation
The Voyagers are space probes that have traveled beyond our solar system. Space probes are unmanned spacecraft designed to explore space and gather information about celestial bodies. The Voyagers were launched in the 1970s and have provided valuable data about the outer planets and interstellar space. They have been able to travel beyond our solar system due to their advanced technology and long-lasting power sources.
14.
On a ___ astronauts can live and work in space for long periods of time.
Correct Answer
A. Space station
Explanation
A space station is a habitable structure in space where astronauts can live and work for extended periods of time. It is designed to provide a comfortable and safe environment for astronauts to conduct scientific research, perform experiments, and carry out various activities necessary for space exploration. Unlike a space shuttle, which is primarily used for transportation to and from space, a space station is a permanent facility that serves as a base for astronauts to live and work in space for long durations.
15.
____ can be used more than once to send people into space.
Correct Answer
B. Space shuttle
Explanation
The space shuttle is capable of being used multiple times to send people into space. Unlike other spacecraft, such as the space station, which remains in orbit and serves as a long-term residence for astronauts, the space shuttle is designed to launch into space, complete its mission, and return to Earth for refurbishment and reuse. This capability allows for cost savings and increased efficiency in space exploration.