A child may immediately ask more questions, others may be silent, then wish to revisit the subject again later.
Children sometimes get confused with what they hear so it is important you check their understanding by revisiting the subject at appropriate times.
As time passes and children have new experiences, they will need further explanations and sharing of ideas and thoughts.
It may take time for a child to comprehend fully the ramifications of death and its emotional implications.
They have their own personal ways of handling and expressing emotions.