Science Written Assessment

The ______ is the largest artery of the human body.

• aorta
• ventricle
• auricle
• vena cava

Marble is a type of ______ rock.

• magma
• igneous
• metamorphic
• sedimentary

The brightness of a star is known as its ______.

• amplitude
• strength
• magnitude
• luminosity

If you were standing on the moon and dropped a cannonball and a feather at the same time, which would land first?

• The cannonball lands first.

• They float due to weightlessness.

• The feather lands first.

• They land at the same time.

Not many trees grow in a grassland biome because of low rainfall, fires, and ______.

• animals

• freezing temperatures

• high winds

• flood

______ are used to tear and shred food.

• Molars
• Bicuspids
• Canines
• Incisors

The ______ can detect and measure radioactivity.

• electroscope
• Geiger counter
• cloud chamber
• bubble chamber

Another name for the aurora borealis is the ______.

• northern lights
• southern lights
• magnetosphere
• Van Allen belts

Erosion due to wind can be prevented by

• irrigation.

• windbreaks.

• contour plowing.

• terracing.

Electric power is measured in

• watts.
• ohms.
• joules.
• volts.