What can you conclude about Fossil A and Fossil B?

Fossil B is older because it is in a lower layer of the rock

Volcanoes & earthquakes are changing Iceland - Why is this happening?

The answer is A, Iceland sits on top of a mid-ocean ridge

How can trees weather rocks?

by growing into cracks in the rocks

Which of the following is true of desert plants?

they can survive with little water

Sedimentary rock layers: What can you conclude about these rock layers, from this picture?

likely formed on the sea floor when sediment was deposited

How does wind weather rocks?

slams sediments into larger rocks

Which statement is true of a central plans grassland?

Many plants can regrow there after a fire

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Grade 4 - Nat Geo - Earth Science Review

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Questions 20

Answers

1
Which can form when wind deposits sediment?
a sand dune
a landslide
a V-shaped valley
a U-shaped valley
2
In the PNW, there are many landslides. What most likely causes these rocks and soils to erode?
tree roots
glaciers
gravity and rainfall
frequent volcanic eruptions
3
Which is an example of a living thing causing erosion?
a beaver building a dam
a plant growing in a crack in a rock
a fish fossilizing in sediment
a meerkat digging a burrow
4
Which of these is the result of erosion by gravity?
a landslide
a fossil layer
a sand dune
a rock arch
5
What can you conclude about Fossil A and Fossil B?
Fossil A is older because it is in the top layer of the rock
Fossil B is older because it is in a lower layer of the rock
A&B are the same age b/c they are both in sedimentary rock
A&B are the same age b/c both animals lived in the water
6
Which earth processes cause a sand dune to form?
faulting and landslides
weathering and volcanism
erosion and deposition
deposition and rifting
7
Rainfall affects the types of living things found in a region. Which are common in the PNW?
deciduous trees and penguins
evergreens and birds
bison and grasses
cacti and iguanas
8
Ethan finds a fossil in a rock. Which of these will the fossil help him determine?
grain size of the rock
texture of the rock
age of the rock
color of the rock
9
Volcanoes & earthquakes are changing Iceland - Why is this happening?
The answer is A
Iceland sits on top of a mid-ocean ridge
10
Katie finds a rock that contains some fossil fish bones. What can she conclude about the rock?
it comes from the oldest rock layer
it comes from the youngest rock layer
it formed in water
it formed in a desert
11
What changes rocks into large, U-shaped valleys?
glaciers
winding rivers
heavy rain
strong winds
12
Marley saw a boulder that was about as a large as a car. What likely deposited the boulder?
a winding river
a heavy rainfall
a glacier
wind
13
How can trees weather rocks?
by blocking sunlight
by preventing rainfall from reaching the rocks
by dropping leaves on the rocks
by growing into cracks in the rocks
14
The amount of rainfall in the U.S. varies. Which region receives the most rainfall each year?
the Pacific Northwest
the Eastern United States
the Southwestern United States
the Central Plains
15
Which of the following is true of desert plants?
they grow very tall in one season
they can survive with little water
they are mostly deciduous trees
they need a lot of water to survive
16
Sedimentary rock layers: What can you conclude about these rock layers, from this picture?
they likely formed during an earthquake when rocks crumbled
they likely formed from lava when volcanoes erupted
likely formed on the sea floor when sediment was deposited
they likely formed when glaciers eroded the land
17
How does wind weather rocks?
dissolves the rock into sediment
rolls rocks along the ground
slams sediments into larger rocks
moves rocks to a new place
18
What type of landform can form when water weathers and erodes layers of rock?
mid-ocean ridge
fossils
canyons
sand dunes
19
Which statement is true of a central plans grassland?
The high rainfall there supports many tall trees
Many plants can regrow there after a fire
Most animals there have scaly skin
Very few plants or animals can survive there
20
Think back: When sediment was found in the jar of shaken water & rocks, what could we conclude?
water can form rocks
water can harden rocks
water can weather rocks
water can melt rocks

Grade 4 - Nat Geo - Earth Science Review Flashcards | StudBud