2024智慧树网课答案 时间和空间 最新完整智慧树知到满分章节测试答案

绪论 单元测试

1、 问题:

Which of the following topics is NOT covered in this course?（  ）。 

选项：
A:The spacetime view of special relativity
B:The geometry of general relativity
C:The thermodynamics of black hole
D:The composition and evolution of our universe
答案: 【
The thermodynamics of black hole
】

第一章 单元测试

1、 问题:Which is the weakest in the four fundamental interactions?（ ）。
选项：
A:Electromagnetism
B:Gravitation
C:Weak interaction
D:Strong interaction
答案: 【
Gravitation
】

2、 问题:Which interaction does photon mediate?（ ）。
选项：
A:Electromagnetism
B:Gravitation
C:Weak interaction
D:Strong interaction
答案: 【
Electromagnetism
】

3、 问题:Which is the correct form of Newton’s inverse square gravity law?（ ）。
选项：
A:
B:
C:
D:
答案: 【

】

4、 问题:Gravity is universal because there are no negative gravitational charge.（ ）
选项：
A:对
B:错
答案: 【
错
】

5、 问题:Which of the four fundamental interactions are long distance force?（ ）。
选项：
A:Electromagnetism
B:Gravitation
C:Weak interaction
D:Strong interaction
答案: 【
Electromagnetism
Gravitation
】

6、 问题:Which is the correct form of the important ratio in this section?（ ）。
选项：
A:
B:
C:
D:
答案: 【

】

7、 问题:Which of the following has the strongest gravitational environment?（ ）。
选项：
A:Human
B:Hydrogen atom
C:Strand of DNA
D:Milky Way
答案: 【
Strand of DNA
】

8、 问题:Our universe is a strong gravity system.（ ）
选项：
A:对
B:错
答案: 【
对
】

9、 问题:Which of the following statement about black holes is correct?（ ）。
选项：
A:Black holes are strong gravity system.
B:Their event horizon is .
C:Newton gravity is good enough to describe black hole.
D:Kerr black hole is not rotating.
答案: 【
Their event horizon is .
】

10、 问题:Which of the following statement about gravitational waves is correct?（ ）。
选项：
A:a system consisting of two black holes (or BH-star) in close orbit around each other can generate gravitational waves
B:Gravitational waves can propagate with the speed of light.
C:GW150914 is the first gravitational wave signal human observed.
D:Penrose was awarded the Nobel prize for the detection of gravitational waves.
答案: 【
a system consisting of two black holes (or BH-star) in close orbit around each other can generate gravitational waves
Gravitational waves can propagate with the speed of light.
GW150914 is the first gravitational wave signal human observed.
】

第二章 单元测试

1、 问题:In a gravitational field, all bodies with the same initial conditions follow the same curve in space and time.（ ）
选项：
A:对
B:错
答案: 【
对
】

2、 问题:Which is the correct form of sum of interior angles for a triangle on a sphere?（ ）。
选项：
A:
B:
C:
D:
答案: 【

】

3、 问题:Which is range of sum of interior angles for a triangle on a sphere?（ ）。
选项：
A:
B:
C:
D:
答案: 【

】

4、 问题:Which is correct form of the ratio of the circumference to the radius of a circle on a sphere?（ ）。
选项：
A:
B:
C:
D:
答案: 【

】

5、 问题:For some geometry, the sum of the interior angle of a triangle can be smaller than 180 degree.（ ）
选项：
A:对
B:错
答案: 【
对
】

6、 问题:The line element for a geometry must be positive definite.（ ）
选项：
A:对
B:错
答案: 【
对
】

7、 问题:Which is correct form of the line element for polar coordiantes in the Euclidean geometry of a plane ?（ ）。
选项：
A:
B:
C:
D:
答案: 【

】

8、 问题:What is the distance between two point and on a sphere of radius a ?(assuming )（ ）。
选项：
A:
B:
C:
D:
答案: 【

】

9、 问题:The geometry with the line element is axisymmetric about a axis. （ ）
选项：
A:对
B:错
答案: 【
对
】

10、 问题:What is the circumference of a circle of constant on a geometry with the line element （ ）。
选项：
A:
B:
C:
D:
答案: 【

】

第三章 单元测试

1、 问题:If the motion of a given particle satisties in some reference frame, then this frame is called a inertial frame. （ ）
选项：
A:对
B:错
答案: 【
错
】