Gravity and Geodesy MCQs with Answers

adminMarch 27, 2024

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Welcome to the Gravity and Geodesy MCQs with Answers. In this post, we have shared Gravity and Geodesy Online Test for different competitive exams. Find practice Gravity and Geodesy Practice Questions with answers in Physics Tests exams here. Each question offers a chance to enhance your knowledge regarding Gravity and Geodesy.

Gravity and Geodesy Online Quiz

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Test Name: Gravity and Geodesy MCQ Quiz Practice
Type: Quiz Test
Total Questions: 40
Total Marks: 40
Time: 40 minutes

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Gravity and Geodesy

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1 / 40

What is the formula to calculate gravitational force between two objects?

F = (G * m1 * m2) / r^2

F = m * g

F = m * a

2 / 40

What is the unit of measurement for the strength of Earth's gravitational field?

Tesla

Gal

Newton

3 / 40

What is the term for the study of the gravitational forces between celestial bodies?

Gravitational geodesy

Orbital dynamics

Celestial mechanics

4 / 40

What is the shape of the equipotential surface of the Earth's gravity field?

Ellipsoid

Geoid

Sphere

5 / 40

What is the shape of the equipotential surface of Earth's gravity field?

Ellipsoid

Sphere

Geoid

6 / 40

What is the term for the study of the Earth's gravitational field?

Gravitonics

Gravimetrics

Gravimetry

7 / 40

What is the unit of measurement for gravitational acceleration?

m/s^2

N/kg

m/s

8 / 40

What effect does altitude have on gravitational acceleration?

Decreases

Increases

Remains constant

9 / 40

Which of the following is NOT a factor affecting gravitational acceleration?

Distance from the center of the Earth

Mass of the object

Color of the object

10 / 40

Which geodetic datum is commonly used as a reference for mapping and navigation?

ED50

WGS84

NAD83

11 / 40

What is the gravitational acceleration at the center of the Earth?

Infinite

Same as at the surface

Zero

12 / 40

What term describes the study of the shape and size of the Earth?

Geometry

Geology

Geodesy

13 / 40

Which factor affects the strength of Earth's gravitational field?

Distance from the center of the Earth

Distance from the Sun

Mass of the Earth

14 / 40

What is the shape of the Earth according to geodesy?

Perfect sphere

Oblate spheroid

Ellipsoid

15 / 40

What is the primary cause of variations in the strength of Earth's gravitational field?

Variations in Earth's mass distribution

Variations in Earth's magnetic field

Variations in Earth's rotation speed

16 / 40

What is the name of the theoretical model representing the Earth's gravity field?

Geoid

Spheroid

Ellipsoid

17 / 40

What is the name of the force that keeps satellites in orbit around the Earth?

Magnetic force

Centripetal force

Gravitational force

18 / 40

Which celestial body has the greatest gravitational pull on Earth?

Sun

Jupiter

Moon

19 / 40

What is the force that attracts objects towards the center of the Earth?

Gravity

Magnetism

Friction

20 / 40

What instrument is used to measure changes in the Earth's gravitational field caused by subsurface density variations?

Spectrometer

Gravimeter

Magnetometer

21 / 40

What is the shape of the Earth's gravitational field?

Spherical

Ellipsoidal

Irregular

22 / 40

What is the approximate value of acceleration due to gravity on the surface of the Earth?

9.8 m/s^2

12.5 m/s^2

6.7 m/s^2

23 / 40

In which direction does gravity act on a freely falling object?

Upward

Downward

Sideways

24 / 40

Which scientist proposed the concept of the geoid?

Friedrich Robert Helmert

Carl Friedrich Gauss

Albert Einstein

25 / 40

Which law describes how the force of gravity weakens with distance?

Inverse square law

Newton's first law

Boyle's law

26 / 40

Who formulated the law of universal gravitation?

Galileo Galilei

Albert Einstein

Isaac Newton

27 / 40

Which type of surveying uses gravity measurements to determine the shape of the Earth's surface?

Geodetic surveying

Topographic surveying

Gravimetric surveying

28 / 40

What is the term for the study of the Earth's shape using satellite measurements?

Satellite geodesy

Cartography

Astrometry

29 / 40

Which instrument is used to measure variations in the Earth's gravitational field due to changes in the density of subsurface materials?

Gravimeter

Barometer

Seismograph

30 / 40

What is the approximate value of gravitational acceleration on the Moon's surface?

9.8 m/s^2

6.7 m/s^2

1.6 m/s^2

31 / 40

Which branch of geodesy deals with the measurement and representation of Earth's gravity field?

Satellite geodesy

Physical geodesy

Geoid geodesy

32 / 40

What is the value of gravitational acceleration inside a freely falling elevator?

Approximately zero

Varies depending on the speed of the elevator

Approximately 9.8 m/s^2

33 / 40

What is the difference between mass and weight?

Mass is constant, weight varies with gravity

Weight is constant, mass varies with gravity

They are the same

34 / 40

What is the phenomenon that causes ocean tides due to the gravitational pull of the Moon and the Sun?

Tidal force

Tide

Gravitational attraction

35 / 40

What happens to gravitational acceleration as you move away from the Earth's surface?

Increases

Decreases

Remains constant

36 / 40

What is the unit of measurement for the gravitational potential of a point in space?

Gal

Volt

Joule

37 / 40

What is the value of gravitational acceleration in space, far from any massive objects?

Approximately zero

Approximately 1.6 m/s^2

Approximately 9.8 m/s^2

38 / 40

What instrument is used to measure gravitational acceleration?

Seismometer

Barometer

Gravimeter

39 / 40

Which of the following affects gravitational acceleration the most?

Shape of the object

Distance from the center of the Earth

Mass of the object

40 / 40

What is the name of the force that causes objects to feel weightless in free fall?

Centrifugal force

Apparent gravity

Weightlessness

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adminMarch 27, 2024

0 5 1 minute read