X-Rays Multiple Choice Test

X-rays
1. are invisible high-energy waves.
2. are waves that you can see.
3. are not invisible.
4. can pass through everything.
Wilhelm Roentgen called them X-rays because
1. X means something that is unknown.
2. X is the speed of light.
3. the waves have the form of an X.
4. it was the only letter that had no meaning.
Doctors use X-rays to
1. see bones and organs inside your body.
2. make blood tests.
3. make skin and muscles stronger.
4. operate on patients.
Scanners are used
1. if X-rays cannot give you a clear picture.
2. to protect parts of your body.
3. to show bones.
4. to block other waves from harming your body.
People who work with X-ray machines must
1. wear special clothes.
2. be near the patient.
3. use special eye glasses.
4. stay far away from patients.
Scientists use X-rays to
1. find out how old objects are.
2. make clear pictures of the Earth.
3. destroy hard objects.
4. to contact satellites in Earth orbit.