Q: What system carries nerve impulses to internal organs, controlling activities that are not under your control, such as sweating and digesting food? Choices: - limbic nervous system - circulatory nervous system - hormonal nervous system - autonomic nervous system A:
autonomic nervous system

Q: What term is used for the difference in the placement of an object from one time to another? Choices: - variation - replacement - diffusion - displacement A:
displacement

Q: Q: What do you call a period when temperatures are cooler than normal, causing glaciers to spread? Choices: - polar age - earth age - thermal age - ice age A:
A: ice age

Question: Q: Ions that contain fewer electrons than protons have a net positive charge and are called what? Choices: - oxides - particles - anions - cations A:
Answer: cations

*Question*
Q: What kind of weathering changes the size of a mineral or rock but does not change its chemical composition? Choices: - molecular weathering - chemical reaction - radiation - mechanical weathering A:
**Answer**
mechanical weathering

Q: What does a theory need to be supported by? Choices: - facts - peer reviewed journals - scientists - many observations A:
many observations