EASY
MYP:4-5
IMPORTANT
Earn 100

When lightning strikes, the bottom of the thunder cloud is negatively charged. Determine the direction in which the electrons will travel.

Important Questions on Interaction

EASY
MYP:4-5
IMPORTANT
Explain why the electric field will pull the electrons and the nuclei of air molecules in different directions.
HARD
MYP:4-5
IMPORTANT
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
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
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
If the thunder cloud both had the same charge, determine whether they would attract or repel.
EASY
MYP:4-5
IMPORTANT

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?

MEDIUM
MYP:4-5
IMPORTANT

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.

Suggest one control variable for this experiment and justify the reason for your choice.

 

HARD
MYP:4-5
IMPORTANT

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.

Formulate a hypothesis experiment for this experiment. Explain the reasons for your hypothesis.