prep 1 units 2&3

The motion of pendulum is ..........periodic motion, while the motion of the Moon around the Earth is ..........periodic motion.

• Periodic - vibrating

• Vibrating - circular

• Circular - vibrating

The Earth occupies the ...........position according to the distance from the Sun and the........ order according to the volume (ascendingly).

• Third - fourth

• Third - fifth

• Fourth - third

Limestone is from............ rocks, while granite is from............ rocks.

• Sedimentary - igneous

• Igneous - metamorphic

• Sedimentary - metamorphic

Choose the unsuitable word:

Gamma rays - X-rays - Sound waves - Visible light.

• Gamma rays

• X- rays

• Sound waves

• Visible light

Choose the unsuitable word:

Crust-Soil - Mantle - Core.

• Crust

• Soil

• Mantle

• Core

Choose the unsuitable word:

Erosion - Transportation - Lava - Sedimentation.

• Erosion

• Transportation

• Lava

• Sedimentation

Choose the unsuitable word:

Mercury - Earth - Sun - Jupiter.

• Mercury

• Earth

• Sun

• Jupiter

Cross out the odd word:

Quartz - Mica - Feldspar - Basalt.

• Quartz

• Mica

• Feldsper

• Basalt

Cross out the odd word:

Light wave - Sound wave - Radio wave - Microwave.

• Light wave

• Sound wave

• Radio wave

• Microwave

Water waves are electromagnetic waves.

• True

• False