1) THE FORCE OF A MAGNET IS GREATEST a) AT THE POLES b) IN THE CENTER OF THE MAGNET c) THE FORCE IS THE SAME THROUGHOUT THE MAGNET 2) THE AREA AROUND A MAGNET WHERE IT CAN PUSH OR PULL a) MAGNETIC FORCE b) MAGNETIC FIELD c) MAGNETIC POLE 3) THE PUSH OR PULL OF A MAGNET a) MAGNETIC FORCE b) MAGNETIC FIELD c) MAGNETIC POLE 4) HOW IS A BAR MAGNET DIFFERENT FROM AN ELECTROMAGNET? a) AN ELECTROMAGNET IS PERMANENT b) AN ELECTROMAGNET IS TEMPORARY c) AN ELECTROMAGNET IS STRONGER 5) A MAGNET IS ATTRACTED TO a) ALL METALS b) NO METALS c) NICKEL, COBALT, IRON 6) WHICH IS TRUE OF BAR MAGNETS AND ELECTROMAGNETS? a) THEY BOTH HAVE NORTH AND SOUTH POLES b) THEY BOTH NEED ELECTRIC CURRENT TO WORK c) THEY ARE BOTH TEMPORARY 7) THE STRENGTH OF AN ELECTROMAGNET DEPENDS ON THE NUMBER OF COILS AROUND THE CORE a) TRUE b) FALSE 8) IN ORDER FOR AN ELECTROMAGNET TO WORK, IT MUST BE a) PART OF A CLOSED ELECTRIC CIRCUIT b) ATTACHED TO AN OPEN ELECTRIC CIRCUIT c) ATTACHED TO A BAR MAGNET 9) MAGNETS CAN ATTRACT ALL METALS a) TRUE b) FALSE 10) WHEN A NORTH POLE OF A MAGNET IS PUT BESIDE THE SOUTH POLE OF ANOTHER MAGNET a) THE MAGNETS WILL ATTRACT b) THE MAGNETS WILL REPEL c) THERE WILL BE NO MAGNETIC FORCE 11) A BAR MAGNET CAN BE TURNED ON AND OFF a) TRUE b) FALSE 12) wHY DOES A COMPASS WORK TO TELL DIRECTION a) BECAUSE THE EARTH HAS A MAGNETIC CORE b) BECAUSE THE COMPASS MAGNET IS ATTRACTED TO THE NORTH POLE WHICH CONSISTS OF METAL c) BECAUSE THE NEEDLE HAS BEEN MAGNETIZED BY AN ELECTROMAGNET 13) BAR MAGNETS AND ELECTROMAGNETS BOTH HAVE A NORTH AND SOUTH POLE a) TRUE b) FALSE 14) ARE YOU GOING TO PASS YOUR MAGNETS UNIT TEST? a) ABSOLUTELY!! b) OUTLOOK NOT SO GOOD...

MAGNETS REVIEW MAZE

由
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？