Answer the following question given this paragraph: Solar energy is used to heat homes and water, and to make electricity. Scientists and engineers have many ways to get energy from the Sun ( Figure above ). One is by using solar cells. Solar cells are devices that turn sunlight directly into electricity. Lots of solar cells make up an individual solar panel. You may have seen solar panels on roof tops. The Sun's heat can also be trapped in your home by using south facing windows and good insulation. Q: The sun's heat can also be trapped in your home by using south facing windows and good what? Choices: - floors - vegetation - curtains - insulation A:
insulation
(Question)
Answer the following question given this paragraph: You encounter solids and liquids in many forms in your everyday life. Solids, unlike liquids, hold a definite shape. Both solids and liquids hold a definite volume. However, on a molecular level, these two states of matter are quite different. In this lesson we will introduce some of the properties of liquids and solids that affect your interactions with the substances all around you. Q: Both solids and liquids hold a definite what? Choices: - mass - size - shape - volume A:
(Answer)
volume
Ques: Answer the following question given this paragraph: Composite volcanoes are also called stratovolcanoes. This is because they are formed by alternating layers (strata) of magma and ash ( Figure below ). The magma that creates composite volcanoes tends to be thick. The steep sides form because the lava cannot flow too far from the vent. The thick magma may also create explosive eruptions. Ash and pyroclasts erupt into the air. Much of this material falls back down near the vent. This creates the steep sides of stratovolcanoes. Q: What is in danger of happening when thick magma is formed? Choices: - focused eruptions - continuous eruptions - earthquakes - explosive eruptions A:
Ans: explosive eruptions
(Q).
Answer the following question given this paragraph: Prophase I: Chromosomes form, and the nuclear membrane breaks down. Centrioles move to opposite poles of the cell. Spindle fibers form between the centrioles. Here's what's special about meiosis : Homologous chromosomes pair up! You can see this in Figure below . Q: Spindle fibers form between the centrioles during prophase i of what process? Choices: - mitosis - hydrolysis - photosynthesis - meiosis A:
(A).
meiosis
Ques:Answer the following question given this paragraph: Metamorphic rocks form as an existing rock is altered by high temperature or pressure. Q: What kind of rocks form as an existing rock is altered by high temperature or pressure? Choices: - igneous - sedimentary - basaltic - metamorphic A:

Ans:metamorphic
Ques: Answer the following question given this paragraph: Q: What do you call an incomplete outer shell of an atom? Choices: - helium shell - motile shell - nucleic shell - valence shell A:
Ans:
valence shell