Question

quiz

1. weathering occurs when rocks are broken down by

a) wind or ice
b) plants or animals
c) water or temperature changes
d) all of the above

1. which one is an example of how electricity is used in a classroom?

a) pencils and markers
b) a lamp
c) library books
d) closets and shelves

Explanation:

Question 1

Weathering is the breakdown of rocks. Wind, ice, plants, animals, water, and temperature changes all contribute to weathering. Option a: wind/ice cause mechanical weathering. Option b: plants (root growth) or animals (burrowing) break rocks. Option c: water (chemical/mechanical) and temperature changes (thermal expansion) break rocks. So all these factors (a, b, c) are involved, making d correct.

Electricity - using devices need electric power. Option a: pencils/markers are non - electric. Option b: a lamp uses electricity to light. Option c: library books are non - electric. Option d: closets/shelves are non - electric. So b is correct.

Answer:

d) all of the above

Question 2