The unit used to measure ‘Pressure’ is_____.

A. pascal
B. newton
C. watt

D. tesla

(more…)

The device used to measure movements of the heart is_____.

A. Cardiograph
B. Seismograph
C. Hydrometer
D. Hygrometer

(more…)

The guitar has ______ strings.

A. 4
B. 5
C. 6
D. 7

(more…)

Sound waves from a loudspeaker are caused by_____.

A. frequency
B. vibrations
C. pitch
D. amplitude

(more…)

The number of oscillations per second is called the_____.

A. hertz
B. waves
C. pitch
D. frequency (more…)

The first chemical explosive, Gunpowder, is a mixture of_____.

A. Sulfur, Charcoal and Nitrogen Oxide
B. Sulfur, Charcoal, and Potassium Nitrate
C. Sulfur and Charcoal
D. Charcoal and Potassium Nitrate

(more…)

Mitochondria contain their own supply of_____.

A. DNA

B. Amino acids
C. Vitamins
D. Oxygen

(more…)

______ are called the powerhouses of the cell.

A. Mitochondria
B. Vesicles
C. Lungs
D. Liver

(more…)

During photosynthesis, plants_____.

A. take in Carbon Dioxide
B. take in Oxygen
C. give off Carbon Dioxide
D. give off Oxygen (more…)

In night, when photosynthesis is stopped, plants_____.

A. take in Carbon Dioxide
B. take in Oxygen
C. give off Carbon Dioxide
D. give off Oxygen

(more…)