4th Grade Science Unit Test Review: Planets and Stars

A rover is a vehicle that can drive on rocky surfaces, and has been used to drive on the surface of our moon and on the surface of Mars.

Based on this information, what can rovers do that most space exploration tools cannot do?

• A. Collect rocks from the surface of moons and planets

• B. Take pictures of distant stars and galaxies

• C. Orbit distant planets and observe their moons

• D. Drive on the surface of the Sun and measure the temperature

There is a recorded list of more than 40,000 stars today. Long ago, there were only a little more than 1,000. Why have modern astronomers recorded so many more stars?

• A. Ancient astronomers had little knowledge.

• B. Modern astronomers can use Rover to find new stars.

• C. Modern astronomers have powerful telescopes that help them see more stars.

• D. Ancient astronomers made their counts before many of the stars were formed

How can this model help us learn about our Solar System? What are two strengths?

• A. It has the correct order of the planets

• B. It has the correct distances between the planets.

• C. It has the relative sizes of the planets

• D. It has the correct distance between the sun and Mercury.

Tags

NGSS.MS-ESS1-1

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Jamal is constructing a scale model of our solar system. First, he compares the sizes of the Sun, the rocky planets, and the gaseous planets. Which answer choice lists the three objects in order from smallest to largest?

• A. rocky planets, gaseous planets, Sun

• B. gaseous planets, rocky planets, Sun

• C. Sun, gaseous planets, rocky planets

• D. Sun, rocky planets, gaseous planets

Tags

NGSS.MS-ESS1-3

What are the 4 rocky planets of our solar system?

• A. Mercury, Neptune, Jupiter, and Mars

• B. Saturn, Mars, Earth, and Moon

• C. Mercury, Venus, Earth, and Mars

• D. Earth, Jupiter, Neptune, and Venus

What are the 4 gaseous planets?

• A. Neptune, Jupiter, Venus, and Mercury

• B. Mars, Venus, Neptune, and Uranus

• C. Venus, Earth, Uranus, and Mars

• D. Jupiter, Saturn, Uranus, and Neptune

Look at the following model. What is one of the limitations of this type of diagram when trying to model our solar system?

• A. The diagram does not show the relative sizes of the Sun and planets accurately.

• B. The diagram does not show all of the stars in our solar system.

• C. The diagram does not show the planets in the correct order of distance from the Sun.

• D. The diagram does not show all of the planets in our solar system.

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-3

What is a manned spaceflight?

• A. A spacecraft with astronauts on board

• B. A spacecraft that uses animals on board

• C. A spacecraft with robots on board.

• C. Rover

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NGSS.MS-ETS1-1

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What is an unmanned spacecraft ?

• A. a team of astronauts aboard a spaceflight

• B. a spacecraft without humans on board, used for robotic spaceflight

• C. a spacecraft that uses animals

• D. a simulated spacecraft used for training

Tags

NGSS.MS-ETS1-1

One of the ways scientists have improved the performance of telescopes was by placing them at the tops of tall mountains or buildings.

Based on this information, which characteristic is MOST LIKELY important for telescope performance?

• A. the height of the telescope above Earth's surface

• B. the shape of the telescope

• C. the time of day that the telescope is used to view objects

• D. the weight of the telescope

Tags

NGSS.MS-ESS2-6