Science Review

To create an experiment to test how the type of soil will affect the growth of the plant, all of the following must be true EXCEPT - 

• all the containers must be the same
• all the plants must be the same
• all the soils must be the same
• all the plants must get the same amount of water

Sandt is conducting an experiment to find out which food his dog likes best. Which is the independent variable in his experiment? 

• the color of his dog's food dish
• the type of dog food he gives his dog
• the amount of food he gives his dog
• the time of day he feeds his dog

Sound is a type of mechanical energy that is transported by - 

• waves
• heat
• light
• electrons

Which of these makes a sound with the slowest vibration?

• whistle
• harmonica
• flute
• drum

Which of these transmits sound the fastest?

• a metal rod
• water in a pool
• empty space
• air in a balloon 

Which of these objects is opaque?

• stained glass window
• water
• eyeglass lens
• a brick wall

What happens if the lid is removed from a container holding helium gas?

• the gas will change to a liquid
• the gas will expand and escape from the container
• Gravity will keep the gas in the container
• When light hits the gas, it will change colors

Which part of the ocean floor is likely to have the least amount of sea life, the coldest tempertatures, and the greatest water pressure?

• conitental shelf
• abyssal plain
• deep ocean ridge
• seamount

Which best describes the  continental shelf?

• A region with higher water pressure
• A flat underwater valley
• A shallow area of seidment near the shore
• A region of mountains in the oceans

Which type of current is between North America and Europe?

• Gulf Stream
• American Stream
• European Stream
• Oceanic Stream