Holes drilled several kilometers into Earth's crust provide direct evidence about Earth's interior in the form of

a.

seismic waves.

b.

rock samples.

c.

liquid iron.

d.

volcanic eruption.

The velocity of a ball as it is thrown up is 20mps it attains zero velocity after 3.5 seconds what is the average acceleration of a ball during its upward flight

When a muscle is stretching by a contraction of the opposing muscle it is called

Which of the following is an element? a. salt b. iron c. nylon d. sand

An electric iron has a rating of 750w and 220v then calculate the current flowing through it and the resistance

Octane is an important component of gasoline. Octane will ignite at a temperature of 428°F. What is this temperature on the Celsius scale?

Which of the following describes a scientific law? A. based of scientific evidence B. explains how and why nature does what it does C. not based of scientific evidence

Before leaving her home, Myesha makes sure that every electrical appliance is unplugged and checks that every window and door is securely locked. She checks everything seventeen times according to a strict ritual that she has worked out.

a minibus drives 238 miles with a constant speed of 84 mph and another 80 miles with a constant speed of 60 mph. how much time in total does it take to travel these distance?

If the volume of a container increases, then the pressure will: A. first increase and then decrease. B. increase. C. stay the same. D. decrease.

How does the theory of natural selection explain the diversity of life?