3B

• read from bottom of meniscus to avoid parallax error
• Use a measuring cylinder, a thinner measuring cylinder means less uncertainty as change in volume is greater
• When pressure of air is greater and temp constant, volume of air decreases.
• Charles‘ law is applied when mass and pressure constant.
• For small measurements, large uncertainty
• If pressure is greater in one location than another, then there is a resultant force
• % change = new change / original x 100