7th Gr. Semester Review

Ecology

100

A producer

What is an organism that can make its own food by using energy from its surrounding 

200

Cellular Respiration?

What is the process by which one or more substances change to produce one or more different substances?

300

Carrying capacity

What is the maximum number of individuals an area can support.

400

An example of commensalism

What is trees provide oxygen for animals and animals provide carbon dioxide for trees.

500

Light intensity: Higher light intensity generally increases the rate of photosynthesis.
Temperature: Photosynthesis has an optimal temperature range, and rates can decrease outside this range.
Carbon dioxide concentration: Increased carbon dioxide levels can enhance photosynthesis, up to a certain point.
Water availability: Water is a reactant in photosynthesis, so low water availability can reduce its rate.

What is some factors that affect the rate of photosynthesis? 

Parts of an Ecosystem

100

An Abiotic Factor

What is an environmental factor that is not associated with the activities of living organisms

200

Symbiosis

What is a relationship in which two different organisms live in close association with each other

300

emigration 

What is the act of individuals moving out of a population from one region to another

400

An example of adaptation

 Sharks migrate to warmer waters in the winter

500

Role of ATP in cellular respiration

What is serves as the main energy currency, carrying and delivering energy within the cell

Newtons Laws of Motion

100

Inertia

The tendency of an object to resist changes in motion

200

Newtons First Law of Motion

What is unless acted on by an unbalanced force, an object at rest stays at rest and an object in motion stays in motion at a constant velocity

300

S=D/T

What is the formula for Average Speed? 

400

45N; if Mass is 5kg

What is the force of an object that is 5kg and is accelerating at 9m/s^2?

500

The Unit for Work

 Unit of Joule.

Forces and Motion

100

Friction

What is a force that opposes motion between two surfaces that are in contact?

200

 a force diagram

What is a way to visually describe the pushes or pulls exerted on an object 

300

Contact Force

What is any force that occurs because of two objects making contact with each other 

400

An example of air resistance?

What is a skydiver jumps out of a plane. She falls downward at a very fast speed. When she opens her parachute, she slows down. 

500

Which of the following is an example of velocity?

What is walking 28 km/hr north? 

Electric and Magnetic Forces

100

 Velocity

What is the speed of an object in a particular direction

200

electric charge

What is a fundamental property that causes electric and magnetic interactions

300

60N=110N to the right; 50N to the Left

110-50=60N to the Right

What is the force of an object? 

400

How a powerful electromagnet could be used in a junkyard

It could move heavy objects made of iron

500

What is an example of a force that acts at a distance

what is A magnet is pushed away when it is brought near the end of another magnet?