Review for semester test Part 1 Live

Front

What is average speed?

Back

Average speed is the total distance traveled divided by the total time taken. It is measured in units such as km/h.

Front

What is the difference between distance and displacement?

Back

Distance is the total path length traveled, while displacement is the shortest straight line from the starting point to the endpoint, including direction.

Front

How does temperature affect the kinetic energy of particles?

Back

As the temperature of a substance increases, the kinetic energy of its particles increases, causing them to move faster.

Front

What evidence supports the idea that Earth has changed over time?

Back

Fossils of the same species of extinct plants found on different continents indicate that Earth has undergone significant changes.

Front

What is runoff in the context of watersheds?

Back

Runoff is the flow of water, often from rain, that moves over the ground and can carry pollutants into bodies of water.

Front

What is a watershed?

Back

A watershed is an area of land where all the water that falls as precipitation drains into a common outlet, such as a river or ocean.

Front

What is pollution?

Back

Pollution is the introduction of harmful substances or products into the environment, which can cause adverse effects.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

What is the significance of fossil evidence in geology?

Back

Fossil evidence helps scientists understand the history of life on Earth and how species have evolved over time.

Front

What is the role of arrows in representing distance and displacement?

Back

Arrows can visually represent distance (length of the path) and displacement (straight line from start to end with direction).