7) Astronomy

Question 1

Astronomy:

How many planets are in the solar system?

Answer 1

8

Question 2

Astronomy:

What is the circular motions of which plants go around the sun called?

Answer 2

Orbit

Question 3

Astronomy:

As you go further from the sun do orbits get longer or shorter?

Answer 3

Longer

Question 4

Astronomy:

Moons are natural __________ that orbit a planet.

Answer 4

Satellites

Question 5

Astronomy:

For a planet to be classified as ‘dwarf’ it has to have a ____ _____________ _____.

Answer 5

Weak gravitational field

Question 6

Astronomy:

On average how many dwarf planets are there in the solar system?

Answer 6

Hundreds

Question 7

Astronomy:

Asteroids have to have what shaped orbit to be classified?

Answer 7

Egg shape/ oval (highly elliptical)

Question 8

Astronomy:

What kind of materials are asteroids made up from?

Answer 8

Metals and rocky materials

Question 9

Astronomy:

What planets is the asteroid belt between?

Answer 9

Mars and jupiter

Question 10

Astronomy:

Where is the kuiper belt situated?

Answer 10

Past neptune

Question 11

Astronomy:

What are comets made from?

Answer 11

Rocky material, dust and ice

Question 12

Astronomy:

What is the difference between a comet and an asteroid?

Answer 12

-Made from different materials.

Question 13

Astronomy:

What do comets do while approaching the sun?

Answer 13

Vaporise

Question 14

Astronomy:

What gives the comet its distinctive tail?

Answer 14

The materials it’s made from heating up and turning into a gas

Question 15

Astronomy:

What is the definition of weight?

Answer 15

Weight is how heavy you are dependant on a gravitational field strength.

Question 16

Astronomy:

How do you calculate weight?

Answer 16

Weight = Mass x gravitational field strength

Question 17

Astronomy:

What is the gravitational field strength of earth?

Answer 17

9.8 N/Kg

Question 18

Astronomy:

If an apple has a mass of 100g what is its weight on mars (3.7 N/Kg)?

Answer 18

Weight = 0.37N

Question 19

Astronomy:

What is the weight of a 30kg dog on the Moon (g = 1.7 N/Kg)?

Answer 19

Weight = 51N

Question 20

Astronomy:

What is gravitational field strength measured in?

Answer 20

Newtons per kilogram (N/Kg)

Question 21

Astronomy:

What is weight measured in?

Answer 21

Newtons (N)

Question 22

Astronomy:

What is mass measured in?

Answer 22

Kilogram (Kg)

Question 23

Astronomy:

What did Ptolemy’s model of the solar system have?

Answer 23

The Earth at the centre of it

Question 24

Astronomy:

Nicolas Copernicus changed what about ptolemy’s solar system model?

Answer 24

He put the sun as the centre of it

Question 25

Astronomy: What invention backed up Nicolas’s diagram of the solar system?

Answer 25

The telescope

Question 26

Astronomy: When was Pluto discovered?

Answer 26

1930

Question 27

Astronomy: When did Pluto get reclassified to a dwarf planet?

Answer 27

2006

Question 28

Astronomy: If an object in orbit it travelling too fast what happens?

Answer 28

It’s orbit is too weak and it’s sent off into space

Question 29

Astronomy: What happens if the orbit of an object it too weak?

Answer 29

The gravitational attraction is too strong and it will fall back to the planet

Question 30

Astronomy: What is a stable orbit?

Answer 30

Where the object orbiting travels a fixed path and spirals the earth

Question 31

Astronomy: When an object moves in an orbit at a constant speed what happens to its direction?

Answer 31

It’s constantly changing

Question 32

Astronomy: When an object in orbit changes direction, even if at a constant speed, what does this cause?

Answer 32

An acceleration

Question 33

Astronomy: An object in orbit will only accelerate if it has?

Answer 33

A centripetal force

Question 34

Astronomy: As the planets get further away from the sun what decreases between the 2?

Answer 34

The gravitational attraction

Question 35

Astronomy: If a planet is closer to the sun and has more of a gravitational attraction to it, what else is also increased?

Answer 35

The acceleration of the planet

Question 36

Astronomy: What are the 2 types of orbit for artificial satellites?

Answer 36

Polar orbits | Geostationary orbits

Question 37

Astronomy: Are polar orbits or geostationary orbits larger?

Answer 37

Geostationary orbits

Question 38

Astronomy: Do polar orbits or geostationary orbits travel slower?

Answer 38

Geostationary orbits

Question 39

Astronomy: How long to geostationary orbits take to orbit the earth?

Answer 39

24 Hours