DEP. 2

Question 1

All planets move in elliptic orbits with Sun as one of its lights

Answer 1

1. First Law

Question 2

A traced line from Sun to any planet which covers the same areas at the same time

Answer 2

2. Second Law

Question 3

The square of orbital period in any planet is proportional to cube of average distance from a planet to Sun

Answer 3

3. Third Law

Question 4

Each planet moves in an elliptical orbit, with the Sun at one focus of the ellipse

Answer 4

Kepler’s First Law

Question 5

A line that connects a planet to the Sun sweeps out equal areas in equal times

Answer 5

Kepler’s Second Law

Question 6

The squares of the periods (T) of the planets are directly proportional to the cubes of their average distances (r) to the Sun

Answer 6

Kepler’s Third Law

Question 7

Value of K

Answer 7

300.46 * 10^ -21 s2/m3

Question 8

Is the force of attraction experimented by object with mass

Answer 8

Gravity, also called: gravitational force

Question 9

Two objects attract each other because of its mass, with a force directly proportional to the product of its masses and inversely proportional to te square lf the distance between them

Answer 9

Law of Universal Gravitation

Question 10

Is the force by which objects are attracted by a gravitational field

Answer 10

Weight

Question 11

Is any object that orbits around another object

Answer 11

Satellite

Question 12

Spaceships made on Earth and launched inside of a vehicle. Can be classified by: its function and its low orbits

Answer 12

Artificial satellites

Question 13

The first artificial satellite launched in 1957

Answer 13

Sputnik

Question 14

Any activity that takes a mental or physical effort. Is equal to the product of the magnitude of the force F and the magnitude if the displacement x

Answer 14

Work (W)

Question 15

Units of work

Answer 15

Joules (J)

Question 16

Is defined as the quantity of work done in a unit of time or, as the speed at which a work is done

Answer 16

Power (P)

Question 17

Is defined as the power developed when doing a work of 1 joule in a time of 1 second

Answer 17

Watt

Question 18

The capacity to perform work

Answer 18

Energy

Question 19

Whenever a fuel (coal) is burned

Answer 19

Thermal Energy

Question 20

Turn on tv

Answer 20

Electric Energy

Question 21

Body digests food

Answer 21

Chemical Energy

Question 22

Emit radiation according to its temperature

Answer 22

Radiant Energy

Question 23

A nuclear reactor produces heat due to the release of energy coming from the nucleis to the atoms

Answer 23

Nuclear Energy

Question 24

A body has free fall

Answer 24

Mechanical Energy

Question 25

When the work done implies motion or possibiliy of motion. Is the sum of the potential and kinetic energy of the body in a determined position

Answer 25

Mechanical Energy

E= U + K

Question 26

The work done by the resultant force that acts on a body is equal to the change in the body’s kinetic energy

Answer 26

Work - Energy Theorem

Question 27

Energy a body possesses by virtue of its motion

Answer 27

Kinetic Energy (k)

K= mv2/2

Question 28

The energy a body possesses by virtue of its position in a reference level with regard to the gravitational field

Answer 28

Potencial Energy (U)

U= m . g. h

Question 29

Energy cannot be created or destroyed, it can only be changed from one form into another, but the amount of total energy before the transformation is exactly the same to the amount of total energy after that transformation

Answer 29

Law of Conservation of Energy

Question 30

The conservative system retains the energy and the forced that act on it are called:

Answer 30

Conservative forces

Question 31

The closest position to the Sun

Answer 31

Perihelion

Question 32

The farthest position to the Sun

Answer 32

Aphelion