GCSE Separate Science Physics
Help!
|
|
||||
|---|---|---|---|---|---|
| Which astronomer proposed the geocentric model? | Ptoloemy
🗑
|
||||
| What is the geocentric model? | The earth was the centre of everything with the planets and the sun orbiting
🗑
|
||||
| What heliocentric model? | The sun is at the centre of the solar system.
🗑
|
||||
| What invention allowed scientists to see objects in space in more detail and discover new objects? | Telescope
🗑
|
||||
| What did Galileo observed that supported the heliocentric model of the solar system? | He discovered 4 moons orbiting Jupiter.
🗑
|
||||
| How did Galileos observation support the Copernicius model? | It showed that not everything orbited the Earth.
🗑
|
||||
| How many planets are there in the solar system? | 8 planets and 5 dwarf planets.
🗑
|
||||
| What other bodies are in the solar system? | Comets and asteroids
🗑
|
||||
| What invention allowed astronomers to see more detail than by making drawings? | Photography
🗑
|
||||
| Why are telescopes that orbit the earth useful? | Clearer images as less dust and clouds, some detect parts of the electromagnetic spectrum that are absorbed by the earth’s atmosphere.
🗑
|
||||
| What is weight? | It is the force of gravity acting on an object
🗑
|
||||
| What does weight depend upon? | Mass and gravitational field strength
🗑
|
||||
| What of the gravitational field strength at the surface of a body depend upon? | The mass and radius of the body
🗑
|
||||
| What type of orbit do most objects in the solar system have? | Elliptical
🗑
|
||||
| What are artificial satellites used for? | Communication and to observe the earth and space.
🗑
|
||||
| What type of orbit do broadcasting satellites orbit in? | Geostationary orbits
🗑
|
||||
| Which type of orbit need the lowest amount of fuel for launching satellites? | Low Earth orbits
🗑
|
||||
| Why are polar orbits useful? | They eventually pass over all parts of the earth.
🗑
|
||||
| If a satellite needs to move to a higher orbit does it boosters need to fire to speed it up or slow it down? | Speed it up.
🗑
|
||||
| What is a geostationary orbit? | It takes 24 hours to orbit the earth; it is above the Equator and rotates in the same direction as the Earth spins.
🗑
|
||||
| What is a cloud of dust called in space?(1) | nebula
🗑
|
||||
| What is a stable star using hydrogen in fusion reactions? (1) | Main sequence star
🗑
|
||||
| What is a star that has used up most of its hydrogen and expanded greatly? (1) | Red giant
🗑
|
||||
| What is a hot cloud of gas, not quite hot enough for nuclear reactions? (1) | protostar
🗑
|
||||
| What is a small, cooling star in which fusion reactions have finished? (1) | White dwarf
🗑
|
||||
| What force pulls the nebula together? (1) | gravity
🗑
|
||||
| What kind of reactions occur to produce energy inside a star? (1) | fusion
🗑
|
||||
| In a stable star what are the forces X and Y? (2) | X gravity, Y gas pressure
🗑
|
||||
| What are the stages that a star like our sun goes through? (1) order must be correct | Nebula
Protostar
Main sequence
Red giant
White dwarf
🗑
|
||||
| What are the stages that a star that is much more massive that our sun goes through?(1) order must be correct | Nebula
Protostar
Main sequence
Super red giant
Supernova
Neutron start or black hole
🗑
|
||||
| What does the big bang theory state? | The whole universe and all the matter in it started out as a tiny point of tiny energy?
🗑
|
||||
| When does the Big Bang theory suggest the universe began? | About 13.5 billion years ago.
🗑
|
||||
| What is the universe doing according to the Big Bang? | It has been expanding and gravity has caused matter to clump together to form stars.
🗑
|
||||
| What does the steady state theory suggest? | The universe has always existed and matter is continuously created within the universe as it expands.
🗑
|
||||
| What did 2 radio astronomers find in 1964? | They found cosmic microwaves background radiation
🗑
|
||||
| Where does CMB arise from? | Huge amounts of radiation was released at the beginning of the universe.
🗑
|
||||
| Why is the radiation in the microwave range now? | At the universe has expanded the wavelength has increased from gamma rays to microwave range.
🗑
|
||||
| What do both theories steady state and big bang have in common? | Both state the universe is expanding
🗑
|
||||
| Which theory has only red shift to support it? | Steady state
🗑
|
||||
| Which theory has both red shift and CMB to support it? | Big Bang
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
Davenant Foundation School
Popular Physics sets