Science End of Year Review

Hannah notices that when she observes the stars at night, some appear to be brighter than others. What are the main factors that affect how bright a star appears to Hannah?

• the star's energy, size and gravity

• the star's brightness, gravity and energy

• the star's brightness, size and distance from Earth

• the star's magnetism, temperature and distance from Earth

When Margaret conducted an experiment, her results did not match her prediction. Which of the following statements best describes how Margaret should continue her investigation?

• change her results to match her prediction

• create an experiment to try to get the results she wants

• discard the data, because it does not agree with her prediction

• analyze the data to develop another experiment to further investigate that topic

Joshua was testing the properties of minerals. He rubbed two minerals against each other to see if one could scratch the other. Which of the mineral properties was Joshua testing?

• luster

• streak

• cleavage

• hardness

Look at the picture to answer your question

Which answer choice has only the correct characteristics listed in the chart?

• moons and outer planets

• comets and inner planets

• comets and outer planets

• asteroids and inner planets

Ryan was doing yard work. He mowed the lawn and stored the grass clippings in four different locations. After five days he returned to the locations to observe the grass clippings. He recorded his observations in the data table below.

Based on the data table, which would most likely be the temperature of location #3?

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Steven is conducting an experiment to test bean plant growth in three different types of soil. After two weeks he observes that the bean plants grew the tallest in potting soil. What should he do to confirm his results?

• repeat the experiment with corn plants

• repeat the experiment with less sunlight

• repeat the experiment using only potting soil

• repeat the experiment with the exact same conditions

Tags

NGSS.MS-LS2-1

Lily explained that she can observe different patterns of stars int he sky at night, depending on the season. What causes the visible pattern of stars in the night sky to change throughout the seasons?

• the rotation of Earth on its axis

• the rotation of the stars on their axes

• the revolution of Earth around the Sun

• the revolution of the Moon around the Earth

Tags

NGSS.MS-ESS1-1

Look at the picture to answer your question

Mya was comparing two spheres she placed on a balance. Based on the diagram, what can she conclude about the spheres?

• They have the same mass but different volumes.

• They have the same mass and the same volume.

• They have the same volume but different masses.

• They have different masses and different volumes.

Look at the picture to answer your question

Ms. Johnson's class was conducting an investigation to determine how quickly different substances dissolve in water. They poured 100 ml of room temperature water into two identical measuring cups. They then added a teaspoon of sugar into one of the cups and a teaspoon of salt into the other cup at the same time. They observed the cups until each substance dissolved. Below is a data table with each group's data showing the time it took for each substance to dissolve

After comparing the groups' results, what should the class do next?

• remove inconsistent data

• conclude the salt will dissolve the fastest in water

• review the procedures and make sure each group followed them correctly

• conclude that the sugar will take 35 seconds to dissolve because that was the longest time it took a substance to dissolve

Tags

NGSS.MS-PS1-2

Which of the following are the main components of a galaxy?

• dust, moons and gravity

• gas, dust and many stars

• asteroids, comets and planets

• inner planets, outer planets and the Sun