1.
The process of weathered material moving due to gravity is called what?
Correct Answer
D. Erosion
Explanation
Erosion refers to the process of weathered material being transported and moved by the force of gravity. This can include the movement of rocks, soil, and sediment downhill or downstream. Erosion is a natural process that is influenced by factors such as water, wind, and ice, and it plays a significant role in shaping the Earth's surface over time.
2.
What color is a black light bulb?
Correct Answer
C. Purple
Explanation
A black light bulb emits ultraviolet light, which is not visible to the human eye. However, certain materials, such as fluorescent substances, can absorb this ultraviolet light and re-emit it as visible light. This visible light appears to be purple in color when viewed with the naked eye. Therefore, the color of a black light bulb is purple.
3.
The measurement of a point relative to sea level or ground level is known as what?
Correct Answer
D. Altitude
Explanation
Altitude refers to the measurement of a point relative to sea level or ground level. It is commonly used in aviation and geography to determine the height or elevation of a location. This term is specifically used to describe vertical distance and is an important factor in various fields, such as weather forecasting, navigation, and mountaineering.
4.
When the moon appears to block the sun, as seen from Earth, what is the event called?
Correct Answer
C. Solar Eclipse
Explanation
A solar eclipse occurs when the moon passes between the sun and Earth, blocking the sun's light and casting a shadow on Earth's surface. This alignment causes the moon to appear to completely or partially cover the sun, resulting in a temporary darkening of the sky. During a solar eclipse, the moon's shadow can be seen on Earth, creating a visually stunning phenomenon. Therefore, the correct answer is Solar Eclipse.
5.
What general name is also given to natural satellites?
Correct Answer
C. Moon
Explanation
The general name given to natural satellites is "moon". This term is commonly used to refer to the natural satellites that orbit around planets, such as Earth's moon.
6.
What is a nuclear reaction in which two small atomic nuclei fuse called in scientific terms?
Correct Answer
A. Nuclear Fusion
Explanation
Nuclear fusion is a scientific term used to describe a nuclear reaction in which two small atomic nuclei merge together to form a larger nucleus. This reaction releases a tremendous amount of energy and is the process that powers the sun and other stars. Unlike nuclear fission, which involves the splitting of a large atomic nucleus into smaller parts, nuclear fusion involves the combination of smaller nuclei to form a larger one. Gravity and nebula are not scientific terms used to describe this specific type of nuclear reaction.
7.
What do we call data sent from a spacecraft to ground stations?
Correct Answer
A. Telemetry
Explanation
Telemetry refers to the data sent from a spacecraft to ground stations. It includes various parameters such as temperature, pressure, and velocity, which are collected by sensors on the spacecraft and transmitted back to Earth for analysis and monitoring. This data is crucial for monitoring the health and performance of the spacecraft, as well as for conducting scientific research and making informed decisions during space missions.
8.
What is a unit that measures force?
Correct Answer
A. Newton
Explanation
A Newton is the unit used to measure force. It is named after Sir Isaac Newton, who made significant contributions to the field of physics. The Newton is defined as the force required to accelerate a one-kilogram mass by one meter per second squared. This unit is commonly used in various scientific and engineering applications to quantify the amount of force exerted on an object.
9.
The measure of electrical resistance is more commonly known as what?
Correct Answer
A. Ohm
Explanation
The measure of electrical resistance is commonly known as Ohm. Ohm is a unit used to quantify the resistance of an electrical circuit. It is named after Georg Simon Ohm, a German physicist who formulated Ohm's law, which relates current, voltage, and resistance in a circuit.
10.
What is a character encoding scheme used by many computers called?
Correct Answer
C. Ascii
Explanation
ASCII (American Standard Code for Information Interchange) is a character encoding scheme used by many computers. It represents characters as numerical codes, allowing computers to understand and display text. Morse Code is a communication method that uses a series of dots and dashes, not a character encoding scheme. HTML is a markup language used for creating web pages, not a character encoding scheme. Wordpad is a text editor program, not a character encoding scheme.
11.
What unit used for measuring cloth is equivalent to 40 yards?
Correct Answer
A. Bolt
Explanation
A bolt is a unit used for measuring cloth that is equivalent to 40 yards. It is a common term used in the textile industry to refer to a roll or piece of fabric that is 40 yards long. This unit of measurement is often used when purchasing fabric in bulk or for wholesale purposes.
12.
What does the scientist called a "cytologist" do?
Correct Answer
B. Studies Cells
Explanation
A cytologist is a scientist who studies cells. They focus on the structure, function, and behavior of cells, including their development, reproduction, and interaction with other cells. By studying cells, cytologists contribute to our understanding of various biological processes, diseases, and the development of new treatments and therapies.
13.
What is a lumen?
Correct Answer
A. Measure Of The Amount Of Light
Explanation
A lumen is a unit used to measure the amount of light emitted by a light source. It is a measure of the total amount of visible light that is generated, or the brightness of the light source. The higher the number of lumens, the brighter the light. Therefore, the correct answer is "Measure Of The Amount Of Light."
14.
How is the unit of measurement "chain" defined?
Correct Answer
A. 66 Feet Or One-Tenth Of A Furlong In Length
Explanation
A chain is defined as a unit of measurement that is equal to 66 feet or one-tenth of a furlong in length. This unit is commonly used in land surveying and is derived from the length of a surveyor's chain, which was historically used to measure distances.
15.
Which one of the food groups is a good source of calcium, protein, riboflavin and vitamin A?
Correct Answer
A. Milk Group
Explanation
The milk group is a good source of calcium, protein, riboflavin, and vitamin A. Milk and dairy products such as cheese and yogurt are rich in calcium, which is essential for strong bones and teeth. They also provide high-quality protein, which is important for growth and repair of body tissues. Riboflavin, also known as vitamin B2, is found in milk and helps convert food into energy. Additionally, milk is fortified with vitamin A, which is important for healthy vision and immune function. Therefore, the milk group is the correct answer as it provides all these essential nutrients.