NATS EXAM 2 QUESTIONS WITH ANSWERS 2026 | 027
What did the 'new star' (stella nova) observed by Brahe in 1572 turn out to be? -
Answers - supernova
What was Brahe's most important contribution to the Scientific revolution? - Answers -
His accurate data of the positions of planets and stars
In Copernicus' model of the Universe, the __________ was at the centre. - Answers -
sun
What was the name of Copernicus' book? - Answers - On the Revolutions of the
Heavenly Spheres
Copernicus' model of the Solar System was more accurate than Ptolemy's - Answers -
False
How did Copernicus' model of the solar system explain retrograde motion? - Answers -
As a perspective effect, when an inner planet was overtaking an outer planet in its orbit
around the Sun
Which is the correct equation for Kepler's 3rd Law? - Answers - P2/a3=constant
According to Kepler's 3rd Law, which planet orbits the Sun the fastest? - Answers -
Mercury
What shape did Kepler discover planetary orbits to be? - Answers - elliptical
Which planet enabled Kepler to reach his breakthrough in understanding the correct
shape for planetary orbits? - Answers - mars
If you were to drop a bowling ball and a marble from the Leaning Tower of Pisa at the
same time, which would hit the ground first? - Answers - the bowling ball
What was the name of the book Galileo published with his first observations through the
telescope? - Answers - Siderius Nuncias
What result did Galileo find for the relationship between d, the distance covered by a
ball rolling down an incline, and t, the time taken for the ball to roll that distance? -
Answers - d = t2
Did Galileo invent the telescope? - Answers - No
, How did Galileo measure time intervals in his experiments? - Answers - a. With a
pendulum
b. With his pulse
c. With a water clock
Which of Galileo's observations provided strongest evidence for Copernicus' model of
the Solar system? - Answers - Venus' phases
Which publication of Galileo's prompted his trial at the Inquisition and conviction of
heresy? - Answers - Dialogue on the Two Systems of the World
If a ball rolls in a straight line on a frictionless surface, what will happen to the ball in the
future? - Answers - it will continue rolling forever
What happened to Galileo after his 1616 meeting with Cardinal Bellarmine? - Answers -
he was ordered to stop working on the Copernican model
What were the optical components of Galileo's telescope? - Answers - one concave and
one convex lens
Newton's 1st Law states: A body that is not subject to outside forces moves at
_______________ - Answers - constant velocity
Newton compared the motion of the Moon to _______________, to deduce his theory
of gravity - Answers - a falling apple
When was the Principia published? - Answers - 1687
What type of telescope did Newton invent? - Answers - reflecting
What did Newton conclude about the behaviour of light in the following experiment -
Answers - that white light was a combination of all colours of the spectrum
Which colour is found at point 2 in the following diagram: - Answers - orange
Who strongly criticized Newton after he published his work on colour and light in 1672?
- Answers - hooke
A car moving in a circle at a constant speed of 15km/h is - Answers - accelerating
If a large _________ is applied to a small mass, the mass will reach a large
acceleration. - Answers - force
The force of gravity felt between two objects varies as _____ where r is the distance
between the two objects. - Answers - 1/r2
What did the 'new star' (stella nova) observed by Brahe in 1572 turn out to be? -
Answers - supernova
What was Brahe's most important contribution to the Scientific revolution? - Answers -
His accurate data of the positions of planets and stars
In Copernicus' model of the Universe, the __________ was at the centre. - Answers -
sun
What was the name of Copernicus' book? - Answers - On the Revolutions of the
Heavenly Spheres
Copernicus' model of the Solar System was more accurate than Ptolemy's - Answers -
False
How did Copernicus' model of the solar system explain retrograde motion? - Answers -
As a perspective effect, when an inner planet was overtaking an outer planet in its orbit
around the Sun
Which is the correct equation for Kepler's 3rd Law? - Answers - P2/a3=constant
According to Kepler's 3rd Law, which planet orbits the Sun the fastest? - Answers -
Mercury
What shape did Kepler discover planetary orbits to be? - Answers - elliptical
Which planet enabled Kepler to reach his breakthrough in understanding the correct
shape for planetary orbits? - Answers - mars
If you were to drop a bowling ball and a marble from the Leaning Tower of Pisa at the
same time, which would hit the ground first? - Answers - the bowling ball
What was the name of the book Galileo published with his first observations through the
telescope? - Answers - Siderius Nuncias
What result did Galileo find for the relationship between d, the distance covered by a
ball rolling down an incline, and t, the time taken for the ball to roll that distance? -
Answers - d = t2
Did Galileo invent the telescope? - Answers - No
, How did Galileo measure time intervals in his experiments? - Answers - a. With a
pendulum
b. With his pulse
c. With a water clock
Which of Galileo's observations provided strongest evidence for Copernicus' model of
the Solar system? - Answers - Venus' phases
Which publication of Galileo's prompted his trial at the Inquisition and conviction of
heresy? - Answers - Dialogue on the Two Systems of the World
If a ball rolls in a straight line on a frictionless surface, what will happen to the ball in the
future? - Answers - it will continue rolling forever
What happened to Galileo after his 1616 meeting with Cardinal Bellarmine? - Answers -
he was ordered to stop working on the Copernican model
What were the optical components of Galileo's telescope? - Answers - one concave and
one convex lens
Newton's 1st Law states: A body that is not subject to outside forces moves at
_______________ - Answers - constant velocity
Newton compared the motion of the Moon to _______________, to deduce his theory
of gravity - Answers - a falling apple
When was the Principia published? - Answers - 1687
What type of telescope did Newton invent? - Answers - reflecting
What did Newton conclude about the behaviour of light in the following experiment -
Answers - that white light was a combination of all colours of the spectrum
Which colour is found at point 2 in the following diagram: - Answers - orange
Who strongly criticized Newton after he published his work on colour and light in 1672?
- Answers - hooke
A car moving in a circle at a constant speed of 15km/h is - Answers - accelerating
If a large _________ is applied to a small mass, the mass will reach a large
acceleration. - Answers - force
The force of gravity felt between two objects varies as _____ where r is the distance
between the two objects. - Answers - 1/r2
