GRADE 9 NATURAL SCIENCE REVISION (TERM 3) EXAM QUESTIONS AND ANSWERS

GRADE 9 NATURAL SCIENCE REVISION
(TERM 3) EXAM QUESTIONS AND
ANSWERS
A stationary object such as a car, will be able to move if enough people exert enough
force by (twisting/pushing) it. - ANSWER-pushing

TRUE or FALSE
Groups of cells connected together are known as batteries. - ANSWER-true

Forces work in ________. - ANSWER-pairs

TRUE or FALSE
Resistance equals the potential difference across a conductor divided by the current
through a conductor. - ANSWER-true

A __________ force is applied when two objects come in contact with each other. -
ANSWER-contact

TRUE or FALSE
When cells that have the same voltage are connected in parallel, the total sum of the
voltage of the battery is increased. - ANSWER-false

Name 3 contact forces. - ANSWER-friction
tension
compression

TRUE or FALSE
Adding more cells in parallel increases the voltage and decreases how long the battery
will last. - ANSWER-false

Name the 3 types of forces. - ANSWER-push
pull
twist

TRUE or FALSE
An electric cell is a system that manufactures electricity. - ANSWER-true

Name 3 field forces. - ANSWER-gravitational force
magnetic force
electrostatic force

TRUE or FALSE