fourth grade review

What type of force is shown in the image?

• A noncontact force that deforms an object.

• A contact force that deforms an object.

• A noncontact force that results in a change of position.

• A contact force that results in a change of position.

Who or what exerts frictional force on the refrigerator?

• The boy.

• The ramp

• The ground.

• The truck.

What would you think if someone said to you that the surface of the earth is like a jigsaw puzzle? The most external zone of the earth is called the lithosphere. The lithosphere is not one solid mass, but instead is composed of different pieces that fit together. According to the text above, what does this diagram show?

• The core is formed by plates.

• he lithosphere is formed by plates.

• The upper mantle is formed by plates.

• The lower mantle is formed by plate

Which geosphere part does correspond to the next description ?outer shell of rock, referring to less than 1% of Earth's radius and volume. It is the top component of the lithosphere, a division of Earth's layers that includes the crust and the upper part of the mantle

• Crust

• Core

• Mantle

• Lithosphere

Which geosphere part does correspond to the next description: is a layer of silicate rock between the crust and the outer core. It has a mass of 4.01×10²⁴ kg (8.84×10²⁴ lb) and thus makes up 67% of the mass of Earth

• Crust

• Mantle

• Core

• Lithosphere

Which geosphere part does correspond to the next description : The core is found about 2,900 kilometers (1,802 miles) below Earth’s surface, and has a radius of about 3,485 kilometers (2,165 miles). It is the hottest layer ?

• Mantle

• Crust

• Core

• Lithosphere

According to the geosphere parts: What happen as you travel toward the earth's core

• The temperature increases

• The temperature decreases

• We would be in the same conditions

• The layers become thinner

Movements in the lithosphere cause tremors or earthquakes that may result in serious damage on the earth´s surface. Which objects should the city people include in an emergency kit?

• Make up, water, pencil case and an ereaser

• Medicine, Non perishable food, water , sleeping bag and a flashlight

• Notebooks, books and magazines

• Vegetables, water, batteries and a radio

In an experiment, three springs were attached to a bar, and a different weight was hung from each spring, as shown below. What can you conclude from the experiment?

• A larger weight stretches the spring more.

• The size of the weight doesn’t affect how much the spring stretches.

• A lighter weight stretches the spring more.

• None of the weights stretches the spring.

En el laboratorio se mide la temperatura a la cual cierta cantidad de agua cambia completamente de líquido a gaseoso. Para ello, se aumenta la temperatura del agua hasta que hierve. El dibujo que representa la metodología del experimento es:

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