Physics Dr Hamidizadeh Flashcards
Name 3 ancient ideas about the Earth
.in India people thought that a flat Earth was supported by 12 pillars
.in Thailand people thought that the Earth was supported on the back of a turtle
.a very popular theory was that every planet revolve around the Earth
What is the Geocentric model?
The geocentric Model is the idea that all the planets revolve around the Earth
What is the Heliocentric model
The Heliocentric model is the idea that all the planets including the Earth revolve around the sun
Who is Bhaskaracharya and what did he discover
Baskaracharya is an Indian mathematician/astronomer who lived around 1000 years ago
What is an exoplanet
A planet orbiting a star that is not the sun
What piece of equipment do astronomers use to detect planets
They use telescopes
What is a refracting telescope made up off
Refracting telescope: objective lens, eyepiece lens, tube
What is a reflecting telescope made up of
Reflecting telescope: eyepiece, flat mirror, concave mirror
Name some differences between the reflecting and refracting telescope
The refracting telescope doesnt have a flat lens
Reflecting telescope can focus all types of EM radiation
Name some similarities in the refracting and reflecting telescopes
They both focus the light from far away
Both produce images upside down
State the two factors that you need to consider when you do a risk assessment.
Probability of something happening and the consequences of it
What are the risks of space missions
Top of rocket can explode during take off, When they travel back the spacecraft can get very hot, Rely on parachute to slow down, Solar flare
Accuracy
AcCurate is Correct (close to real value)
Precise
PRecise is Repeating (or repeatable)
Reproducible results
A measurement is reproducible if ANOTHER person (or the same person using DIFFERENT equipment/method) can get the same results.
