3rd Grade Science - Plants and Erosion

Which of these BEST describes this leaf?
(2010 test question)
1. Long
2. Square-shaped
3. Round
4. Star-shaped
A company plants trees on a bare hillside. Which of these is the BEST reason for planting the trees?
(2010 test question)
1. The trees provide oxygen for the soil.
2. The trees prevent soil from washing away.
3. The trees make shade for animals living there.
4. The trees cause animals to move to other places.
Which thing near this house will wash away the MOST during a heavy rain?
(2008 test question)
1. Gravel driveway
2. Dirt pile
3. Stepping stones
4. Soil under grass
If water gets into the crack of a rock and then freezes, the rock will MOST likely —
(2007 test question)
1. break apart
2. be able to float
3. become larger
4. change colors
Which of these may have caused the boulders to break away from the cliff?
(2010 test question)
1. Weathering
2. Evaporating
3. Depositing
4. Grinding
A sand dune is shown. Which of these causes sand dunes to form?
(2009 test question)
1. Winds blowing
2. Plants growing
3. Animals digging
4. Temperatures rising
Soil is important to a forest because the soil —
(2008 test question)
1. stores sunlight in the leaves
2. attracts insects that eat leaves
3. provides nutrients to the trees
4. warms the air around the trees
Why is it important to protect soil?
(2010 test question)
1. It covers the bedrock layer in the earth.
2. It has nutrients used by plants to grow.
3. It holds many harmful pollutants.
4. It dries quickly in sunlight.
Which job is done in Virginia only during the fall season?
(2009 test question)
1. Picking apples
2. Feeding animals
3. Selling clothes
4. Building houses
Which of these is the BEST sign that the fall season has begun?
(2009 test question)
1. Plants forming new buds
2. Sun shining on flowers
3. Grass being wet in the morning
4. Leaves changing color on trees
Which of the following BEST shows the order of events in the lifecycle of a bean plant?
(2009 test question)
1. 2, 3, 4, 1
2. 3, 4, 2, 1
3. 1, 2, 4, 3
4. 1, 4, 3, 2
Which of these will take the LONGEST time to observe?
(2010 test question)
1. One moon-phase cycle
2. One ocean-tide cycle
3. An acorn growing into an adult tree
4. A caterpillar becoming a butterfly
Which of these lists has only products that come from plants?
(2009 test question)
1. Paper, spices, and fibers
2. Wool, lumber, and butter
3. Medicines, leather, and milk
4. Cotton, rubber, and eggs
Which of these is made from a plant?
(2010 test question)