Unit 2 Study Guide
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20 QuestionsShow answers
  • Question 1
    30 seconds
    Q.

    There are many different colors of stars. Which characteristic determines the color of a star?

    answer choices

    actual brightness

    size and shape

    temperature

    distance from Earth

  • Question 2
    30 seconds
    Q.

    Planets are classified as either inner planets or outer planets based on their distance from the sun. What is found between the inner planets and the outer planets?

    answer choices

    asteroids

    moons

    comets

    stars

  • Question 3
    30 seconds
    Q.

    Which of these characteristics distinguishes the outer planets from the inner planets?

    answer choices

    The outer planets have many moons.

    The outer planets orbit in a different direction.

    The outer planets have higher densities.

    The outer planets have smaller diameters.

  • Question 4
    30 seconds
    Q.

    All of the outer planets __________.

    answer choices

    are gas giants

    orbit the sun in a circular, rather than an elliptical, pattern

    are smaller with few moons

    are rocky and dense

  • Question 5
    30 seconds
    Q.

    During a visit to an observatory, Silvano observed the moon, Venus, the sun, and the star Sirius. Which of these objects is outside of the solar system?

    answer choices

    moon

    Venus

    sun

    Sirius

  • Question 6
    30 seconds
    Q.

    Telescopes are useful tools for observing objects in our solar system. When might you use a telescope?

    answer choices

    to see more detail about a small area of the sky

    to predict the position of a star

    to determine the thickness of a planet’s core

    to collect a sample from a space object

  • Question 7
    30 seconds
    Q.

    While looking at the sky one night, Bevan saw a streak of light. Bevan’s father told him that the light was produced by a small chunk of rock passing through Earth’s atmosphere. Which of these terms best describes what Bevan saw?

    answer choices

    asteroid

    comet

    meteor

    meteorite

  • Question 8
    30 seconds
    Q.

    Which object in our solar system is made up of ice and dust, and has a tail?

    answer choices

    an asteroid

    a comet

    a meteor

    a planet

  • Question 9
    30 seconds
    Q.

    Which sentence BEST describes how the Sun APPEARS to move across the sky during the day?

    answer choices

    The Sun stays in one spot during the day.

    The Sun travels in an arc across the sky.

    The Sun goes straight up and down in the same place.

    The Sun travels in a circle in the sky.

  • Question 10
    30 seconds
    Q.

    Which of the following is a TRUE statement about Earth's rotation?

    answer choices

    Earth's rotation causes the seasons.

    Earth's rotation causes daytime and nighttime.

    It takes 365 days for Earth to complete one rotation on its axis.

    Planets in the sky appear to stay in one place because of Earth's rotation.

  • Question 11
    30 seconds
    Q.

    Which of the following minerals ranks 1 on Moh's hardness scale, making it soft enough for a fingernail to scratch?

    answer choices

    diamond

    mica

    talc

    pyrite

  • Question 12
    30 seconds
    Q.

    Minerals have different properties that help scientists identify them. Which of the following is NOT a property used to identify minerals?

    answer choices

    luster

    hardness

    size

    color

  • Question 13
    30 seconds
    Q.

    Earth has many resources that humans need and use. Some, such as plants used for food, are __________. Others, such as fossil fuels, are __________.

    answer choices

    renewable, nonrenewable

    nonrenewable, renewable

    natural, manmade

    manmade, natural

  • Question 14
    30 seconds
    Q.

    Which of the following is an example of weathering?

    answer choices

    A man cutting wood for a fire.

    Water erupting from a geyser.

    A fruit bat eating an apple from a tree.

    Tall, steep, mountain peaks becoming rounded over time.

  • Question 15
    30 seconds
    Q.

    Which statement BEST describes one way water can weather Earth's surface?

    answer choices

    rain falls into a lake

    water flows through pipes

    water evaporates and goes into the atmosphere to form clouds

    water freezes in a rock, expands, and breaks the rock into smaller pieces

  • Question 16
    30 seconds
    Q.

    Which of the following can wear down Earth's surface?

    answer choices

    ice

    water

    wind

    all of the above

  • Question 17
    30 seconds
    Q.

    Which of the following is likely to cause the most erosion?

    answer choices

    a river

    a small creek

    a pond

    a puddle

  • Question 18
    30 seconds
    Q.

    Students from two classes conducted the same investigation. Each class got different results. Which is the BEST way for the students to determine why the results were different?

    answer choices

    Review the steps taken during the investigations.

    Change the hypothesis of the investigation.

    Research data on similar investigations.

    Conduct a different investigation.

  • Question 19
    30 seconds
    Q.

    Which of the following sentences about fossils is TRUE?

    answer choices

    Only the remains of animals become fossils.

    Rocks from long ago can become fossils.

    Fossils are only found in areas where dinosaurs used to live.

    Fossils help scientists learn what the environment was like long ago.

  • Question 20
    30 seconds
    Q.

    Melinda learned that days in some seasons have more daylight hours than in other seasons. Which season receives the MOST hours of sunlight in the Northern Hemisphere?

    answer choices

    fall

    spring

    summer

    winter

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