A student draws a model showing the movement of Earth, the moon and the sun. What causes the apparent movement of the sun across the sky?

A student made a list of activities that involve energy. 1. Sharks chasing a school of fish. 2. A toaster heating bread. 3. A cell phone charging. 4. A tree limb failing to the ground. 5. Tomato plants absorbing sunlight. 6 A canoe floating down a river. Which activities on the list are examples of the use of mechanical energy?

A student combined powered paint with water to make a small amount of a blue liquid paint mixture. The student left the paint mixture in an open container. Several days later the student found the container and observed that changes had occurred. What most likely happened to the mixture?

A student puts four objects in a bucket filled with water. The objects are listed below. 1. plastic ball, 2. glass marble, 3. metal paper clip, 4. wood block. Which two objects are most likely less dense than the water?

Students drop the same heavy ball onto identical blocks of soft clay from different heights. For each height they measure the depth of the dent the ball makes in the clay. Why is the depth of the dent different in each trial?

Some scientist measure and recorded local rainfall amounts and water levels at several local lakes over the summer. They compared their measurements with data from the past 30 years. The scientist concluded that the area was drier this summer than in previous years. They plan to continue recording these measurements each summer for the next decade. What characteristic of the area are the scientists studying?

Which list contains items that could ALL conduct electrictity to complete the circuit?

Which type of material would light energy reflect off of the most after hitting the surface?

Juanita found her Christmas present wrapped up and hidden in her grandmother's closet. SHe wanted to find out what was int eh box without opening it. Using her scientific skills, she foudn out that her present had these properties: rolls, bounces, no-magnetic, sold, bigger than 20 cm. What might her present be?

Which of the following is a solution?

A piece of chalk fell ont he floor. What properties of the chalk would have changed?

Tyrone made two groups of matter: One group had matter smaller than 5 grams. The other group had matter larger than 5 grams. Tyrone was classifying matter by which property?

Microscopes, eyeglasses and cameras all...

Which of the following could be seperated using a filter?

Which tool would be most useful in separating pepper from iron filings?