About how much of the Earth is covered by water? A.30% B.70% C.90% D.50%

Darrell has 35 grams of melted chocolate. He pours all of the melted chocolate in molds. After he allows them to cool, Darrell has two solid bars of chocolate.

The minerals diamond and quartz can both be colorless. However, diamond will scratch quartz, while quartz will not scratch diamond. This is because each has a different ____. A.breakage pattern B.streak color C.crystal structure D.hardness

How can humans conserve water? A.keep the water running while brushing their teeth B.leave the water hose on all day C.take quick showers instead of baths D.run the washing machine daily

Examine the photo below. How will the shadow cast by the tree change over the course of a day?

Which kind of water source is usually the largest? A. a lake B. a pond C. a river D. an ocean

A chemical company has just dumped tons of hazardous waste into an empty field near their factory. What effect will this have on the ecosystem of the area?

The students in the picture have designed a test to investigate A. how sound moves through different materials. B. how the water cycle works. C. how shadows form. D. how toy cars accelerate.

Ashley lives in a city by the ocean. Lyla lives in a city that is not located near a large body of water. If both of the cities are located at the same latitude, which of the following is most likely true?

What happens when the baking soda mixes with the vinegar? A. The baking soda and the vinegar both stay the same. B. The baking soda turns into vinegar. C. The vinegar turns into baking soda. D. A new substance forms.

All animals need food to survive. Which of these is a use for food? A.motion B.body repair C.growth D.all of these

The picture below shows the path of motion of a football that Terrell is catching. Why did the football change directions in the middle of its path?

Which substance is insoluble in water? A. sugar B. salt C. sand D. soap