Week 8 Assessment

The media that sound passes through are.........., .................., and ..................?

• solid, liquid and gases

• air, water, or solids

• chemical, mechanical and electrical

Where can ultrasound be applied?

• medical imaging

• biology

• chemistry

• physics

What charge does an electron carry?

• positive

• neutral

• negative

Electrons are larger than atoms. True/False?

• True
• False

A characteristic of democracy is ...................?

• citizen participation and representation

• elite democracy

• digital democracy

• economic democracy

What country practices direct democracy?

• Nigeria

• Ghana

• America

• Switzerland

A form of democracy that emphasizes the role of an elite group in policy is called ..................

• economic democracy

• consensus democracy

• elite democracy

In democracy, every citizen has a voice. True/False?

• True
• False

To split an atom is no easy. But when atoms are split, it gives out a tremendous energy called?

• nuclear energy
• kinetic energy
• chemical energy
• solar energy

An instrument used to split atoms is called?

• Nuclear reactor
• Electron microscope
• Mass spectrometer
• Cyclotron