Review for mini assessment (6.11B and 7.8C)

Review for mini assessment (6.11B, 7.8C, 6.8A)

This is the review for your upcoming assessment on Gravity + Watersheds + Potential & Kinetic Energy.

Watersheds Vocab:

• Watershed: an area of land that drains into a body of water.

• Groundwater: water that collects in cracks & pores in underground soil & rock layers.

What is Point Source Pollution?

• one identifiable source of pollution

• such as a pipe, ditch, channel, sewer, or tunnel

Multiple Choice

Which of the following is NOT an example of point source pollution?

• Pollution from a sewage

• Pollution from fertilizer and pesticides from lawns

• Pollution from a tunnel

• Pollution from a pipe

What is Non Point Source Pollution?

• pollution that can't be traced to a single source

• originates from various places across the landscape

Non Point Source Pollution Ex:

• Picture a city street during a thunderstorm. As rainwater flows over asphalt, it washes away drops of oil that leaked from car engines, particles of tire rubber, dog waste, and trash. The runoff goes into a storm sewer and ends up in a nearby river.

Open Ended

What is non point source pollution?

Open Ended

What is the difference between Point Source pollution and Non Point Source pollution?

Multiple Choice

How do the industrial, agricultural, and residential activities of humans most likely affect the groundwater in an area?

• The activities replace the groundwater used.

• Pollutants from the activities percolate through the soil & enter the water table.

• The activities prevent most of the water from evaporating into the atmosphere.

• Pollutants cannot enter the water table.

What is Gravity?

• Every object has a mass that exerts a pull (force) on every other mass.​

• The size of the pull (force) depends on the​ MASS of the object and the DISTANCE between objects.

Multiple Choice

Which of the following governs the motion of our solar system?

• Sunlight

• Friction

• Gravity

• Distance

Multiple Choice

Which two factors affect the strength of the gravitational pull on two objects?

• Weight + Distance

• Density + Mass

• Weight + Speed

• Mass + Distance

Multiple Choice

The force of gravitational attraction between the Sun and Jupiter could be increased by reducing which of the following?

• The distance between the Sun and Jupiter

• The weight between the Sun and Jupiter

• The mass of the Sun and Jupiter

• The density between the Sun and Jupiter

The Sun's force

• The Sun’s gravitational pull keeps the Earth & other planets orbiting the Sun.

• Why? the sun has a greater mass

Multiple Choice

7. Why do planets orbit the Sun?

• The Sun's weight makes it attract planets.

• The Sun is the only celestial object that has a gravitational pull.

• The Sun's chemical composition makes it attract planets.

• The Sun is the most massive object in our solar system, so it exerts the greatest gravitational pull.

Multiple Choice

Gravity can be defined as the -

• force of attraction between two or more objects.

• an attraction between two objects based on weight & distance.

• friction created when two objects are in contact.