10 Days to STAAR: Day 3

1. The diagram below shows a simplified progression of coal formation. What two important factors needed for coal formation are NOT included in the captions?

• Evaporation and condensation
• Heat and pressure
• Weathering and erosion
• Compaction and cementation

2. A diagram of the water cycle is shown in the image below. Four main processes are labeled with A, B, C, and D. Which part of the diagram shows a process that would happen faster on a hot, sunny day?

• Process A
• Process B
• Process C
• Process D

3. Students at recess played two games of tug-of-war. All students have equal strength. Which answer choice describes a difference in motion that could be seen during the two games?

• More motion could be seen in the second game because forces were balanced.
• More motion could be seen in the first game because forces were unbalanced.
• Less motion could be seen in the first game because forces were balanced.
• Less motion could be seen in the second game because forces were unbalanced.

4. Archaeologists digging in an area noticed several different fossil layers. Which statement correctly explains the ages of the layers?

• Layer A is the oldest. Layer D is the youngest.
• Layer A is the youngest. Layer D is the oldest.
• All layers are the same age.
• There is no way to determine the order of the layers, since they may have gotten mixed up over time.

5. The life cycle of a watermelon is shown below. Which statement correctly compares this life cycle to another organism's life cycle?

• Stage A of the watermelon's life cycle is most similar to the egg stage of a butterfly's life cycle.
• Stage C of the watermelon's life cycle is most similar to the adult stage of a cat's life cycle.
• Stage D of the watermelon's life cycle is most similar to the larva stage of a bee's life cycle.
• Stage F of the watermelon's life cycle is most similar to the tadpole stage of a frog's life cycle.

6. Which TWO planets listed below are outer planets?

• Mercury
• Jupiter
• Mars
• Neptune
• Venus

7. Globes are models of the Earth. Most models have limitations. Which TWO statement below are limitations of a globe?

• Globes do not represent the true size of the Earth.
• Globes show the major continents and bodies of water on Earth.
• Globes are able to rotate on their axis.
• Globes are not able to show every city on Earth.
• Globes are the same basic shape as the Earth.

Part A What is the primary difference in the formation of canyons and U-shaped valleys?

• Agent of change
• Speed of formation
• Wind speed
• Constructive vs. destructive forces

9. A chocolate bar was brought outside. After half an hour, it changed. Name the change that occurred AND tell how this change could be reversed.