Do longer-maturity bonds have bigger price swings?

Generally, the longer the remaining maturity, the more the price moves for the same change in interest rates.

According to an FSS example, when market rates rise by 1 percentage point, a bond with a 3% coupon could fall about 8.1% if it has 10 years remaining and about 17.3% if it has 30 years remaining. Even bonds with low credit risk, such as government bonds, can produce losses from interest rate changes if sold before maturity.