Gaza health officials said three Palestinians were wounded in one of the Israeli strikes.
The army said earlier it had targeted two rocket launchers in Gaza with an air strike in response.
In the morning, Gaza's Health Ministry said a 22-year-old Palestinian man was killed by an Israeli airstrike, and 13 other Palestinians were wounded. By late afternoon, the military said some 150 rockets had been fired into Israel.
The two militants were killed in an Israeli airstrike on Friday on a Hamas training facility.
Turkey has repeatedly criticised Israeli policies even though the two countries in 2016 ended a six-year rift triggered by the Israeli storming of a Gaza-bound ship that left 10 Turkish activists dead.
On Friday, two Palestinians were fatally shot by Israeli forces during the weekly protests along Israel-Gaza perimeter fence.
Israel hit 30 Gaza targets, including a "high-end Islamic Jihad tunnel" prepared to attack Israel, according to Conricus.
Violence resumed in Gaza this week after militants fired a rocket into Israel on Tuesday. In a video that also was seen an implicit claim of responsibility, it showed archived footage of militants attaching warheads to rockets. Those who encourage Israel are also guilty.
About two million Palestinians live in Gaza, which has suffered economically from the Israeli blockade as well as recent foreign aid cuts.
Terrorists operating out of the Hamas-ruled Gaza Strip on Saturday launched a steady stream of rockets and mortar shells numbering over 250 into southern Israel.
"The resistance's response [to Israeli raids] carries a message to the enemy [Israel] that it is here" and will not allow Israel to attack our people, Hamas spokesman Abdul Latif al-Qanoua said in a statement.
At least 268 Palestinians have been killed by Israeli fire since the protests began in March 2018, the majority along the border.
Hamas said in a statement on Thursday that its Gaza chief, Yeyha Al Sinwar, had travelled to Cairo for talks on efforts to maintain calm along the border and alleviate Palestinian suffering.
The deadly flare-up between Israel and Gaza militants enters a second day, shattering a monthlong Egyptian-mediated easing of hostilities. Israel and Palestinian militants in the Gaza Strip have fought three wars since 2008 and fears remain of a fourth.