Abeka 5th Science Test 8 p1 L115

The earth's surface spins at over _________ miles per hour.

• 2,000
• 500
• 1,500
• 1,000

Different seasons are caused by the ____ of the earth's axis.

• rotation
• revolution
• position
• tilt

Warm air is _____ than cold air.

• heavier
• lighter

• more dense
• colder

The air that we live in receives most of its warmth from the _____.

• ground

• ocean
• mountains
• sun

The basic cause of all weather is the ____.

• mountains
• sun
• ocean
• moon

Winds are produced by _________ differences on the earth.

• humidity

• gravity

• altitude

• temperature

The imaginary live running through the earth from the North Pole to South Pole is the _______.

• axis
• latitude
• meridian
• equator

Scientists who study the weather are called ________.

• climatologists
• geologists
• oceanographers
• meteorologists

Water vapor the condenses and forms frozen water on the ground is called _______.

• snow
• rain
• frost
• dew

Air is saturated when the humidity of the air is _______ percent.

• 75
• 50
• 100
• 90