Blog

A volcanic eruption takes place in a location. Ash and gas are sent out into the air. Lava flows down the volcano into human habitation. Which Earth systems interact during this process? (3 points)

Which of these is a part of the biosphere? (2 points)

A theory is accepted by scientists when (2 points)

Scientific research shows that our global climate is changing as a result of an increase in greenhouse gases. Arctic sea ice is decreasing in both surface area and thickness. Which of the following statements best describes the consequence of decreasing Arctic sea ice? (3 points)

Which of these statements best describes how scientific thinking is useful in daily life? (2 points)

A student did an experiment with two identical plants, Plant 1 and Plant 2. About 10 mL fertilizer was added to both plants. About 200 mL of water was added to each plant every day. Plant 1 was placed under a desk lamp for 3 hours every day and Plant 2 was placed under the desk lamp for 8 hours every day. The height of the plants was recorded over a period of 5 weeks in the table shown below. Week Height of Plant 1 (in inches) Height of Plant 2 (in inches) 1 12.6 12.6 2 12.9 13.8 3 13.6 14.9 4 13.8 15.7 5 13.9 16.6 Based on the table, which of these conclusions is correct? (2 points)

In the water cycle, which state of matter is water vapor? (3 points)

Scientists in different parts of the world repeat an experiment several times and get the same result. Which of these is the most likely reason why experiments are repeated to produce the same result? (2 points)

One group of students is investigating the properties of the bar magnet shown below. The students took a bowl of iron nails, plastic pieces, wood shavings, and paper pieces. The bar magnet was placed inside the bowl for some time and then taken out. Several iron nails were stuck on the bar magnet. The experiment was repeated by several students using different bar magnets. Based on the investigations, which of these theories would the students most likely propose? (2 points)

The table below shows the average annual precipitation over a period of five years in three locations of Florida.  Tourists typically come to Florida to enjoy the beaches and theme parks.   Locations Amount of precipitation 1 Between 45 to 65 inches 2 More than 96 inches 3 Less than 8 inches Which of these statements is correct for the three locations? (3 points)