★Rocks, Fossils, and Time
Grade 4 Science Worksheet - Challenge Me
NameDate
Circle the answer.
A river canyon has rock with fish fossils at the bottom and rock with dinosaur tracks higher up. What is the best conclusion?
- fish and dinosaurs lived in the same layer
- water covered the area before dinosaurs walked there
- dinosaurs walked there before the water came
- the canyon is older than both layers
A sandstone layer has slanted lines like the sides of sand dunes. What does this suggest?
- people carved the lines later
- a deep ocean covered the area
- ice pushed the sand into lines
- wind piled up dunes there long ago
From top to bottom, a hill has: soil, rock with tree fossils, rock with clam fossils. What change in the landscape does this show?
- land with trees later became a sea
- the trees and clams lived side by side
- the hill was always a forest
- a sea area later became land with trees
Coal forms from swamp plants buried for millions of years. Coal is found in a very cold, dry place. What does this tell scientists?
- coal forms from ice
- swamp plants grow in cold deserts
- the place was once a warm swamp
- the place was always cold and dry
A claim says, "This valley has always been dry land." Which evidence weakens the claim?
- lizards live under the valley's rocks
- fish fossils are found in the valley's rock
- cactus plants grow in the valley today
- the valley gets little rain each year
