Earth Science Review

Students placed several rocks in a metal can. They each shook the can for 15 seconds. When they removed the lid, the students noticed a rocky soil had started to form. What process were the students modeling to create this soil?

• erosion

• weathering

• melting

• evaporation

A student placed dead leaves, cut grass, and bits of twigs in a container with a lid. After a month, she opened the container and noticed soil had started to form. What process created this soil?

• decomposition

• condensation

• cooling

• light energy

Tags

NGSS.MS-LS2-3

Soil contains different amounts of rocks and humus which is decayed plant and animal remains. Which term would best describe soil?

• metallic

• magnetic

• mixture

• mantle

How do plants contribute, or help, in the formation of soil?

• Plants use soil to grow and develop over time.

• Plants cover the soil and shade it from sunlight.

• Plants support the animal life in the soil.

• Plants die, decompose and become part of the soil.

Tags

NGSS.MS-LS2-3

The organic matter in soil comes mostly from plants. Which of the following locations would most likely produce soil with the greatest amount of organic matter?

• a desert with very high temperatures

• a prairie with lots of grasses and flowers

• a mountain with extremely cold winds

• a river with quickly moving water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-3

Which of the following describes the Sun?

• a comet

• a planet

• a star

• a moon

Which two types of energy come directly from the Sun to the Earth?

• mechanical and light

• thermal and mechanical

• sound and electrical

• light and thermal

A student creates a model of the Sun by filling a petri dish with milk. The student adds swirls of red food coloring and sprinkles of pepper in the milk. The red swirls of food coloring in the milk most likely represent-

• the swirling of hot gases on the Sun’s surface

• wind

• cooler areas on the surface of the Sun called sunspots

• he core of the Sun

A third-grade class has started learning about the solar system. A student suggested that the class go outside and record some observations about the Sun in their science notebooks. After recording their observations about the Sun, which statement could not be supported?

• The Sun gives Earth light

• The Sun is close

• The Sun gives Earth heat

• The Sun is bright

Which of these statements BEST describes the Sun?

• It has a shiny surface that reflects light

• It has a hard, solid surface

• It is a ball of hot, glowing gas

• It has craters on its surface