HARD
MYP:4-5
IMPORTANT
Earn 100

Electrostatic forces can be attractive or repulsive while the gravitational force is attractive in nature. Also, the gravitational force is much weaker compared to the electrostatic force. Can you describe any other similarities or differences between electrostatic and gravitational forces?

Important Questions on Interaction

MEDIUM
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 2 - Interaction>Exercise 8>Q 2

Scientists believe that electromagnetism and gravity interactions are interrelated. Investigations of the fundamental interactions require huge experimental collaborations like CERN, which involves 22 countries and has an operating budget of about one billion dollars per year. Discuss the economic arguments for and against spending such vast sums of money on scientific research.

EASY
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 2 - Interaction>Summative assessment>Q 1
When lightning strikes, the bottom of the thunder cloud is negatively charged. Determine the direction in which the electrons will travel.
EASY
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 2 - Interaction>Summative assessment>Q 2
Explain why the electric field will pull the electrons and the nuclei of air molecules in different directions.
HARD
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 2 - Interaction>Summative assessment>Q 3
The presence of the negatively charged thundercloud causes the ground to acquire a positive charge by a process caused induction. Explain how this works.
EASY
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 2 - Interaction>Summative assessment>Q 4
A thunder cloud may have a mass of about 2×106 kg. Calculate the weight of this thunder cloud. use g=9.8 N kg-1.
EASY
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 2 - Interaction>Summative assessment>Q 5
Two thunder clouds with an electric charge will interact with each other through electrostatic and gravitational forces. Which of these interactions would you expect to exert the larger force? Justify your answer.
EASY
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 2 - Interaction>Summative assessment>Q 6
If the thunder cloud both had the same charge, determine whether they would attract or repel.
EASY
MYP:4-5
IMPORTANT
MYP Physics A concept-based approach Years 4&5>Chapter 2 - Interaction>Summative assessment>Q 7

A student wants to investigate the link between thunder and lightning. They design an experiment with a Van de Graaff generator. They plan to measure the loudness of the sound of the spark and compare it with the distance that the spark travels.

What is the dependent variable in this experiment?