Physics space physics

Question 1

What is Summer solstice

Answer 1

When the sun is at its highest point in the sky all year.

Question 2

What is winter solstice

Answer 2

When the sun is at its lowest point all year.

Question 3

A moon is a ——- around the sun

Answer 3

Satellite.

Question 4

When the moon is at -180 degrees which phase is it at?

Answer 4

Full moon.

Question 5

When the moon is at 90 degrees north which phase is it?

Answer 5

First quarter moon.

Question 6

Formula for orbital speed.

Answer 6

s = d/t

Question 7

Formula for average orbital speed.

Answer 7

v= 2 x pi x r / t

Question 8

Solar system consists of?

Answer 8

The sun, Eight planets, Natural and artificial satellites, Dwarf planets, Asterids and comets.

Question 9

8 planets from ascending order.

Answer 9

My very educated mother just served us noodles. Mercy venus earth mars jupiter saturn uranus and neptune.

Question 10

Example of natural satellite

Answer 10

Moon.

Question 11

What is an asteroid

Answer 11

Small rocky object that orbits the sun. and lies between mars and jupiter.

Question 12

What is a comet

Answer 12

Made of ice and dust and orbits the sun.

Question 13

4 rocky and small planets.

Answer 13

Mercy venus Earth and mars. My mom eats vegetables.

Question 14

Gaseous and large planets.

Answer 14

Jupiter saturn Uranus and neptune.

Question 15

What is weight?

Answer 15

The force acting on the object due to gravitational attraction.

Question 16

What does gravity depend on?

Answer 16

The mass and distance between the two objects.

Question 17

Do comets orbit in a circular way?

Answer 17

No. They orbit ina shape called ellipse.

Question 18

Relationship between speed of planet and gravitation field strength

Answer 18

Direct.

Question 19

When the planet is closer what Energy is smaller and greater?

Answer 19

Ep is smaller and Ek is greater.

Question 20

Explain why it would be easier to launch a rocket on mars?

Answer 20

Mars has less mass so they have less gravitaional field strength so require less energy to launch ut.

Question 21

Lowest to highest temp colors of the star

Answer 21

Red orange yellow blue.

Question 22

What is a nebula?

Answer 22

Humble cloud of gas and dust.

Question 23

How is a protostar formed?

Answer 23

If the mass of a region in the nebula is large enough gravity will begin to pull nebula together and compress it to form a. hot ball of gas known as a protostar

Question 24

When does a protostar become a stable star?

Answer 24

When the outward force due to high temps are equal to the inward gravitational attraction.

Question 25

How is a star born?

Answer 25

When the gas has been compressed so much that temp reached million of degrees and fusion starts to begin.

Question 26

How does a red giant form?

Answer 26

When stars begin to run out of hydrogen, more complicated fusions start and stars begin to swell outwards and cool a little at the surface

Question 27

White dwarf?

Answer 27

When the last fusion. reaction stops the star shrinks and the compressed gases hea5 up making the star white hit at the surface.

Question 28

Supergiant.

Answer 28

Stars with a mass much higher than the sun will be extremely bright and will convert hydrogen at a vast rate through fusion when hydrogen runs out they allow swell up making red supergiants.

Question 29

What is supernova?

Answer 29

Once a red supergiant runs out of fuel to sustain the complicated fusion reactions that occur, the star collapses very rapidly. As it rushes inwards, The star explodes in a flash releasing so much energy it can out-shine an entire galaxy This explosion is called a supernova.

Question 30

neutron star?

Answer 30

Remaining dire collapses into tiny extremely dense core made of neutrons.

Question 31

what is the big bang theory?

Answer 31

This theory states that the Universe started at a single point. In an enormous release of energy (the Big Bang) all matter was created and moved outward from this point. Eventually the matter formed dust clouds, stars and the galaxies we see today. However, these galaxies are still moving outwards - the universe is
still expanding and cool

Question 32

what does hubble constant state?

Answer 32

Hubble’s Law states that a galaxy’s recessional velocity (its
from us) is directly proportional to the galaxy’s
A graph of recessional velocity against distance
velocity away
distance from Earth.

Question 33

formula of hubble constant?

Answer 33

v=h0d t=d/v=1/h