Final Fast and Curious-On Level

Which of these provide the best evidence that life could develop on Mars?

• its atmospheric gases

• its surface temperatures

• its craters and rocky surface

• its ice and organic molecules

Which of the following is a reason life in the outermost planets is less likely than life on planets nearer the Sun?

• They have too little mass.

• They have too much mass.

• Their surfaces are extremely hot.

• Their surfaces are extremely cold.

Earth’s distance from the Sun helps the planet sustain life. If the Sun were larger, what would most likely also have to be true for Earth to sustain life?

• Earth would have to be further from the Sun.

• Earth would have to be closer to the Sun.

• Earth would have to be smaller.

• Earth would have to be larger.

The range of temperatures found on Earth’s surface is unique among the planets in the solar system. How does this range of temperatures affect the water cycle on Earth?

• by increasing the amount of all three phases of water on Earth’s surface

• by reducing the ability of liquid water to bond with other substances

• by allowing water to exist in three physical states on Earth’s surface

• by decreasing the ability of liquid water to dissolve other substances

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

NGSS.MS-ESS2-6

The Moon lacks weather and climate changes like those on Earth. What causes the lack of weather on the Moon?

• the lack of water

• the presence of igneous rock

• the very thin atmosphere

• the lack of magnetic poles

Tags

NGSS.MS-ESS2-4

The temperatures in space vary from extremely cold to extremely hot. Earth’s surface temperature is relatively stable. Which of these is most responsible for Earth’s surface temperatures?

• solar radiation reflected from the Moon

• many volcanic eruptions near the Ring of Fire

• the greenhouse effect in the atmosphere

• plankton distribution in shallow ocean waters

Tags

NGSS.MS-ESS3-5

As humans travel in space, which gas is provided in the atmosphere of the spacecraft and which gas is removed from the atmosphere of the spacecraft?

• Oxygen is provided. Carbon dioxide is removed.

• Carbon dioxide is provided. Oxygen is removed.

• Carbon dioxide is provided. Nitrogen is removed.

• Oxygen is provided. Nitrogen is removed.

A scientist compared the atmospheric composition of a newly discovered planet to the atmosphere of Earth. Which conclusion about the unknown planet can be made by using the information provided?

• It is not suitable for animals.

• It will sustain a small human population.

• It has enough oxygen for small mammals.

• It has many carbon-dioxide-releasing organisms.

The table indicates the percentages of some gases in the atmosphere of Mars. Which gas present in the atmosphere of Mars is the primary gas found in the atmosphere of Earth?

• Nitrogen

• Argon

• carbon dioxide

• Methane

Answer explanation

Most of Earth's gas is Nitrogen. We only use Oxygen to breath in and then we breath out carbon dioxide.

Methane is a color less and odorless flammable gas that is only found in very small quantities in the atmosphere.

Argon gas is a colorless odorless element that is a gas found in the air and in volcanic gases and used especially in electric bulbs.

Many processes occur in the digestive system. Which process is best classified as a physical change?

• Saliva converting the starch molecules in crackers into simple sugars

• Digestive enzymes breaking down proteins into smaller fragments

• Bacteria converting lactose into simple sugars in the intestines

• Teeth grinding an almond into smaller pieces in the mouth