TY  - BOOK
AU  - Moore,Rob
TI  - Why Do Balls Bounce?: and other questions about movement            
T2  - Cambridge Young Readers
SN  - 9780521137447
U1  - 153 MOO 
PY  - 2010///
CY  -  United Kingdom
PB  -  Cambridge university Press
KW  - Sciences
KW  - English language
N1  - Contents, Quiz, Glossary.; Questions about gravity
Questions about mass and weight 
Questions about movement
It’s a fact
Can you believe it ? 
Who found out ? 
It’s quiz time !
Glossary

N2  - What is gravity? 
Why don't skydivers fall off into space?
Do heavy objects fall faster than light objects? 
You can find the answers to these and other questions about gravity in Why Do Balls Bounce?

UR  - www.cambridge.org/elt/youngreaders
ER  -